| Class Number |
Class Name |
No. of Patents |
| | Organic compounds (class 532, subclass 1) | |
| | Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) | |
| 549/200 |
Oxygen containing hetero ring (e.g., dioxirane, etc.) |
129 |
| 549/213 |
Boron containing |
91 |
| 549/231 |
Cyclic anhydrides (i.e., -c(=x)oc(=x)-, wherein the x's are the same or diverse chalcogens, is part of the hetero ring) |
60 |
| 549/232 |
The cyclic anhydride has at least six members and is a cyclo in a polycyclo ring system |
58 |
| 549/233 |
The cyclic anhydride is five-membered (e.g., succinic anhydride, etc.) |
81 |
| 549/255 |
Acyclic carbon chain containing carbon to carbon unsaturation bonded directly to the cyclic anhydride |
70 |
| 549/261 |
Double bond between ring members of the cyclic anhydride |
24 |
| 549/262 |
Maleic anhydride per se |
95 |
| 549/254 |
Halogen attached directly or indirectly to the cyclic anhydride by nonionic bonding |
19 |
| 549/253 |
Nitrogen or additional chalcogen attached directly or indirectly to the cyclic anhydride by nonionic bonding |
65 |
| 549/252 |
Plural hetero rings |
56 |
| 549/234 |
Polycyclo ring system having the cyclic anhydride as one of the cyclos |
48 |
| 549/240 |
Bicyclo ring system having the cyclic anhydride as one of the cyclos |
62 |
| 549/246 |
Halogen bonded directly to the bicyclo ring system |
45 |
| 549/244 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the bicyclo ring system |
15 |
| 549/245 |
The -c(=x)- is part of a -c(=x)xh group, wherein the x's are the same or diverse chalcogens, or salt thereof (e.g., trimellitic anhydride, etc.) |
49 |
| 549/243 |
Nitrogen or additional chalcogen bonded directly to the bicyclo ring system |
53 |
| 549/247 |
Phthalic anhydride per se |
49 |
| 549/248 |
Preparing by oxidation |
107 |
| 549/249 |
Fluidized catalyst |
39 |
| 549/250 |
Purification or recovery |
58 |
| 549/251 |
By chemical reaction of impurity in presence of added chemical substance |
16 |
| 549/241 |
Plural bicyclo ring systems each having the cyclic anhydride as one of the cyclos |
112 |
| 549/242 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to at least one of the bicyclo ring systems |
29 |
| 549/235 |
Tetracyclo ring system having the cyclic anhydride as one of the cyclos |
27 |
| 549/236 |
Tricyclo ring system having the cyclic anhydride as one of the cyclos |
40 |
| 549/239 |
Plural ring oxygens in the tricyclo ring system |
62 |
| 549/237 |
Two of the cyclos share at least three ring members (i.e., bridged) |
27 |
| 549/238 |
Halogen bonded directly to the tricyclo ring system |
2 |
| 549/256 |
Preparing by oxidation |
49 |
| 549/258 |
Of acyclic or alicyclic hydrocarbon |
89 |
| 549/259 |
Vanadium and phosphorus, in compound or elemental form, utilized |
193 |
| 549/260 |
Additional heavy metal, other than titanium, utilized |
151 |
| 549/257 |
Of benzene or hydrocarbyl substituted benzene |
80 |
| 549/206 |
Heavy metal or aluminum containing |
129 |
| 549/207 |
Arsenic containing |
15 |
| 549/212 |
Polycyclo ring system having the hetero ring as one of the cyclos |
38 |
| 549/208 |
The hetero ring has three members or at least seven members |
38 |
| 549/209 |
The metal is bonded directly to carbon, which carbon is a ring carbon of the hetero ring or which carbon is attached directly or indirectly to the hetero ring by nonionic bonding |
42 |
| 549/210 |
The metal is bonded directly to chalcogen, which chalcogen is attached directly or indirectly to the hetero ring by nonionic bonding |
85 |
| 549/211 |
The chalcogen, x, is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
24 |
| 549/263 |
Lactones (i.e., -c(=x)o-, wherein x is chalcogen, is part of the hetero ring) |
100 |
| 549/327 |
Acyclic carbon double bonded directly to a ring carbon of a four-membered lactone ring |
7 |
| 549/328 |
Four-membered lactone ring formed |
66 |
| 549/329 |
From a ketene (hch=c=o, wherein h may be substituted) |
22 |
| 549/264 |
Spiro |
226 |
| 549/265 |
The spiro includes the lactone ring |
152 |
| 549/266 |
The lactone ring has at least seven members |
112 |
| 549/271 |
Additional chalcogen attached directly or indirectly to the lactone ring by nonionic bonding |
102 |
| 549/267 |
Plural ring oxygens in the lactone ring |
141 |
| 549/268 |
Polycyclo ring system having the lactone ring as one of the cyclos |
80 |
| 549/269 |
Bicyclo ring system having the lactone ring as one of the cyclos |
56 |
| 549/270 |
Additional acyclic chalcogen bonded directly to the lactone ring (e.g., zearalanone, etc.) |
69 |
| 549/272 |
Preparing from a cyclic ketone (i.e., a ketone where the carbonyl is part of a ring) |
36 |
| 549/295 |
The lactone ring is five-membered |
222 |
| 549/313 |
Additional chalcogen bonded directly to the lactone ring |
169 |
| 549/318 |
Acyclic -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the lactone ring by nonionic bonding |
100 |
| 549/314 |
At least two additional chalcogens bonded directly to the lactone ring |
25 |
| 549/315 |
Double bond between ring members of the lactone ring or chalcogen double bonded directly at the 3- or 4-position of the lactone ring (e.g., ascorbic acid, etc.) |
142 |
| 549/316 |
Amine addition salts |
29 |
| 549/317 |
Sulfur or -c(=x)-, wherein x is chalcogen, bonded directly to acyclic chalcogen |
23 |
| 549/319 |
Plural alkyl groups bonded directly to the same ring carbon of the lactone ring (e.g., pantolactone, etc.) |
38 |
| 549/323 |
Chalcogen attached indirectly to the lactone ring by nonionic bonding |
176 |
| 549/324 |
Halogen attached directly or indirectly to the lactone ring by nonionic bonding |
70 |
| 549/322 |
Having -c(=x), wherein x is chalcogen, bonded directly to the lactone ring |
69 |
| 549/321 |
Nitrogen attached directly or indirectly to the lactone ring by acyclic nonionic bonding |
145 |
| 549/320 |
Plural hetero rings |
95 |
| 549/296 |
Plural ring oxygens in the lactone ring |
37 |
| 549/297 |
Polycyclo ring system having the lactone ring as one of the cyclos |
68 |
| 549/302 |
Bicyclo ring system having the lactone ring as one of the cyclos |
96 |
| 549/305 |
Chalcogen attached indirectly to the lactone ring by acyclic nonionic bonding |
137 |
| 549/304 |
Nitrogen attached indirectly to the lactone ring by acyclic nonionic bonding |
78 |
| 549/303 |
Nitrogen bonded directly to the lactone ring |
40 |
| 549/306 |
Plural ring oxygens in the bicyclo ring system |
37 |
| 549/311 |
The bicyclo ring system consists of two five-membered rings |
113 |
| 549/312 |
Acyclic carbon chain containing carbon to carbon unsaturation attached directly or indirectly to the lactone ring by nonionic bonding |
112 |
| 549/307 |
The other cyclo of the bicyclo ring system is benzene (e.g., phthalides, etc.) |
119 |
| 549/310 |
Additional chalcogen bonded directly to the bicyclo ring system |
76 |
| 549/308 |
Two carbocyclic rings bonded directly to the same ring atom of the lactone ring |
37 |
| 549/309 |
Nitrogen bonded directly to each of the carbocyclic rings |
22 |
| 549/298 |
Tetracyclo ring system having the lactone ring as one of the cyclos |
94 |
| 549/299 |
Tricyclo ring system having the lactone ring as one of the cyclos |
141 |
| 549/301 |
The tricyclo ring system consists of the lactone ring, a five-membered carbocyclic ring, and a three-membered carbocyclic ring |
14 |
| 549/300 |
Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
61 |
| 549/325 |
Preparing by hydrogenation of cyclic anhydrides |
67 |
| 549/326 |
Preparing from compound containing -coo- group |
127 |
| 549/273 |
The lactone ring is six-membered |
154 |
| 549/291 |
Acyclic -c(=x)-, wherein x is chalcogen, bonded directly to the lactone ring |
75 |
| 549/292 |
Additional chalcogen bonded directly to the lactone ring |
360 |
| 549/294 |
Double bond between ring members of the lactone ring |
58 |
| 549/293 |
Nitrogen attached directly or indirectly to the lactone ring by nonionic bonding |
42 |
| 549/274 |
Plural ring oxygens in the lactone ring |
176 |
| 549/275 |
Polycyclo ring system having the lactone ring as one of the cyclos |
26 |
| 549/283 |
Bicyclo ring system having the lactone ring as one of the cyclos |
138 |
| 549/287 |
Acyclic -c(=x)-, wherein x is chalcogen, bonded directly to the lactone ring |
49 |
| 549/285 |
Additional acyclic chalcogen bonded directly to the lactone ring |
137 |
| 549/286 |
Benzene ring and the lactone ring bonded directly to the same acyclic carbon |
20 |
| 549/288 |
Nitrogen bonded directly to the bicyclo ring system |
88 |
| 549/284 |
Plural bicyclo ring systems each having the lactone ring as one of the cyclos |
22 |
| 549/290 |
The bicyclo lactone consists of two six-membered rings and is unsubstituted or hydrocarbyl substituted only |
60 |
| 549/289 |
The other cyclo of the bicyclo ring system is a six-membered carbocyclic ring to which chalcogen is directly attached |
131 |
| 549/276 |
Tetracyclo ring system having the lactone ring as one of the cyclos |
23 |
| 549/279 |
Ring oxygen bonded directly to ring carbon which is a member of two cyclos in the tetracyclo ring system |
12 |
| 549/277 |
The tetracyclo ring system consists of four six-membered cyclos |
26 |
| 549/278 |
At least two additional chalcogens bonded directly to the tetracyclo ring system |
16 |
| 549/280 |
Tricyclo ring system having the lactone ring as one of the cyclos |
74 |
| 549/282 |
Plural ring oxygens in the tricyclo ring system |
104 |
| 549/281 |
Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
37 |
| 549/218 |
Phosphorus attached indirectly to the hetero ring by nonionic bonding |
209 |
| 549/222 |
Chalcogen bonded directly to the hetero ring |
125 |
| 549/219 |
Oxirane ring containing |
30 |
| 549/221 |
Plural ring oxygens in the hetero ring |
107 |
| 549/220 |
Polycyclo ring system having the hetero ring as one of the cyclos |
224 |
| 549/216 |
Phosphorus bonded directly to the hetero ring |
62 |
| 549/217 |
Oxirane ring containing |
15 |
| 549/214 |
Silicon containing |
631 |
| 549/215 |
Oxirane ring containing |
193 |
| 549/330 |
Spiro |
80 |
| 549/331 |
The spiro includes a hetero ring |
139 |
| 549/345 |
Bicyclo ring system having the spiro hetero ring as one of the cyclos (e.g., griseofulvin, etc.) |
105 |
| 549/343 |
Both rings which form the spiro are hetero rings |
57 |
| 549/344 |
Polycyclo ring system having one of the two hetero rings which form the spiro as one of the cyclos |
42 |
| 549/333 |
Plural ring oxygens in a spiro hetero ring |
114 |
| 549/334 |
Both rings which form the spiro are hetero rings |
66 |
| 549/335 |
Two six-membered hetero rings, which each contain plural ring oxygens, form the spiro (e.g., spirobi-(meta-dioxane), etc.) |
45 |
| 549/336 |
Polycyclo ring system having one of the two rings which form the spiro as one of the cyclos |
126 |
| 549/337 |
Additional hetero ring containing |
43 |
| 549/338 |
Plural five-membered hetero rings |
25 |
| 549/339 |
Spiro ring is a cyclo in a tricyclo-carbocyclic ring system |
18 |
| 549/340 |
Acyclic -c(=x)-, wherein x is chalcogen, containing |
11 |
| 549/341 |
The spiro hetero ring is five-membered |
96 |
| 549/342 |
Acyclic -c(=x)-, wherein x is chalcogen, containing |
72 |
| 549/332 |
The spiro includes a three- or four-membered hetero ring |
183 |
| 549/228 |
The hetero ring contains -o-c(=x)-o- as part of its structure, wherein x is chalcogen (e.g., cyclic carbonates, etc.) |
91 |
| 549/229 |
The hetero ring is five-membered |
201 |
| 549/230 |
The five-membered hetero ring, except for the =x to the ring, is unsubstituted or hydrocarbyl substituted only |
121 |
| 549/346 |
The hetero ring has at least seven members |
128 |
| 549/347 |
Plural ring oxygens in the hetero ring |
168 |
| 549/348 |
Polycyclo ring system having the hetero ring as one of the cyclos |
97 |
| 549/350 |
Bicyclo ring system having the hetero ring as one of the cyclos |
111 |
| 549/351 |
Three or more ring oxygens in the bicyclo ring system |
38 |
| 549/349 |
Tricyclo ring system having the hetero ring as one of the cyclos |
107 |
| 549/352 |
Three or more ring oxygens in the hetero ring |
67 |
| 549/353 |
Exactly four oxygens in the hetero ring |
47 |
| 549/354 |
Polycyclo ring system having the hetero ring as one of the cyclos |
161 |
| 549/355 |
Bicyclo ring system having the hetero ring as one of the cyclos |
123 |
| 549/429 |
The hetero ring is five-membered |
244 |
| 549/497 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
202 |
| 549/502 |
Plural chalcogens attached indirectly to the hetero ring by nonionic bonding |
119 |
| 549/503 |
Preparing by hydrogenation of furfural |
20 |
| 549/498 |
The chalcogen, x, is in a -c(=x)- group |
154 |
| 549/499 |
The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
226 |
| 549/501 |
Additional chalcogen attached indirectly to the hetero ring by nonionic bonding |
174 |
| 549/500 |
Plural -c(=x)x- groups attached indirectly to the hetero ring by nonionic bonding |
60 |
| 549/475 |
Chalcogen bonded directly to the hetero ring |
328 |
| 549/479 |
Double bond between ring members of the hetero ring |
272 |
| 549/476 |
Plural chalcogens bonded directly to the hetero ring |
134 |
| 549/477 |
Chalcogen double bonded directly to the hetero ring |
67 |
| 549/478 |
Having -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the hetero ring by nonionic bonding |
115 |
| 549/474 |
Cyano bonded directly to the hetero ring |
93 |
| 549/504 |
Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
96 |
| 549/483 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
171 |
| 549/488 |
Additional chalcogen attached indirectly to the hetero ring by nonionic bonding |
135 |
| 549/487 |
Nitrogen bonded directly to the -c(=x)- group |
229 |
| 549/489 |
Preparation of furfural (i.e., furan-2-aldehyde) |
29 |
| 549/490 |
Purification or recovery of furfural |
20 |
| 549/484 |
The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
168 |
| 549/485 |
Plural -c(=x)x- groups bonded directly to the hetero ring |
25 |
| 549/486 |
The carbon of the -c(=x)x- group is bonded directly at the 3-position of the hetero ring |
64 |
| 549/491 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
336 |
| 549/496 |
Having -c(=x)-, wherein x is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
330 |
| 549/492 |
Nitrogen and the hetero ring are single bonded directly to the same acyclic saturated hydrocarbon group |
117 |
| 549/495 |
Chalcogen attached indirectly to the hetero ring by acyclic nonionic bonding |
120 |
| 549/494 |
Having -c(=x)-, wherein x is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
121 |
| 549/493 |
The nitrogen is bonded directly to a -c(=x)- group, wherein x is chalcogen |
126 |
| 549/480 |
Nitrogen bonded directly to the hetero ring |
224 |
| 549/481 |
Nitro bonded directly to the hetero ring |
53 |
| 549/482 |
The hetero ring and an additional nitrogen are bonded directly to the same carbon |
24 |
| 549/507 |
One double bond between ring members of the hetero ring |
58 |
| 549/505 |
Plural double bonds between ring members of the hetero ring |
102 |
| 549/506 |
Hydrocarbyl substituted |
63 |
| 549/472 |
Plural hetero rings |
252 |
| 549/473 |
Acyclic -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the hetero ring by nonionic bonding |
255 |
| 549/430 |
Plural ring oxygens in the hetero ring |
173 |
| 549/453 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
235 |
| 549/454 |
The chalcogen, x, is in a -c(=x)- group |
220 |
| 549/455 |
Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
117 |
| 549/450 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
89 |
| 549/451 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
189 |
| 549/452 |
The nitrogen is bonded directly to a -c(=x)- group, wherein x is chalcogen |
138 |
| 549/449 |
Nitrogen or chalcogen bonded directly to the hetero ring |
98 |
| 549/448 |
Plural hetero rings |
170 |
| 549/432 |
Polycyclo ring system having the hetero ring as one of the cyclos |
63 |
| 549/434 |
Bicyclo ring system having the hetero ring as one of the cyclos |
165 |
| 549/437 |
Acyclic chalcogen bonded directly to the bicyclo ring system |
151 |
| 549/438 |
Having -c(=x)-, wherein x is chalcogen, attached indirectly to the bicyclo ring system by nonionic bonding |
161 |
| 549/445 |
Chalcogen attached indirectly to the ring system by nonionic bonding |
109 |
| 549/446 |
The chalcogen, x, is in a -c(=x)- group |
57 |
| 549/447 |
The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
132 |
| 549/436 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the bicyclo ring system |
157 |
| 549/440 |
Nitrogen attached indirectly to the bicyclo ring system by nonionic bonding |
69 |
| 549/443 |
Chalcogen attached indirectly to the bicyclo ring system by nonionic bonding |
98 |
| 549/444 |
The chalcogen, x, is in a -c(=x)- group |
82 |
| 549/442 |
The nitrogen is attached directly to carbon by a double or triple bond |
103 |
| 549/441 |
The nitrogen is bonded directly to a -c(=x)- group, wherein x is chalcogen |
180 |
| 549/439 |
Nitrogen bonded directly to the bicyclo ring system |
150 |
| 549/435 |
Plural hetero rings |
206 |
| 549/433 |
Tricyclo ring system having the hetero ring as one of the cyclos |
125 |
| 549/431 |
Three or more ring oxygens in the hetero ring (e.g., ozonides, etc.) |
8 |
| 549/456 |
Polycyclo ring system having the hetero ring as one of the cyclos |
60 |
| 549/462 |
Bicyclo ring system having the hetero ring as one of the cyclos |
299 |
| 549/466 |
Acyclic chalcogen bonded directly to the hetero ring |
197 |
| 549/469 |
Benzene ring bonded directly to the hetero ring |
237 |
| 549/470 |
Chalcogen of -c(=x)x-, wherein the x's are the same or diverse chalcogens, bonded directly to the carbocyclic ring of the bicyclo ring system |
133 |
| 549/468 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
189 |
| 549/467 |
Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
443 |
| 549/471 |
Plural double bonds between ring members of the hetero ring |
199 |
| 549/464 |
Plural ring oxygens in the bicyclo ring system |
89 |
| 549/465 |
The bicyclo ring system consists of two five-membered cyclos |
268 |
| 549/463 |
The two cyclos share at least three ring members (i.e., bridged) |
165 |
| 549/457 |
Tetracyclo ring system having the hetero ring as one of the cyclos |
57 |
| 549/458 |
Tricyclo ring system having the hetero ring as one of the cyclos |
180 |
| 549/460 |
Dibenzofurans (including hydrogenated) |
110 |
| 549/461 |
Having -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the tricyclo ring system by nonionic bonding |
95 |
| 549/459 |
Two of the cyclos share at least three ring members (i.e., bridged) |
54 |
| 549/509 |
Preparing from a hydroxy containing compound |
70 |
| 549/508 |
Preparing from compound containing -coo- group |
87 |
| 549/510 |
The hetero ring is four-membered |
729 |
| 549/511 |
Sulfur or halogen attached directly or indirectly to the hetero ring by nonionic bonding |
509 |
| 549/356 |
The hetero ring is six-membered |
176 |
| 549/427 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
159 |
| 549/416 |
Chalcogen bonded directly to the hetero ring |
258 |
| 549/421 |
Alicyclic ring bonded directly to the chalcogen |
137 |
| 549/422 |
Five-membered carbocyclic ring having the hetero ring as part of one substituent and -coo- as part of another substituent (e.g., prostaglandin intermediates, etc.) |
95 |
| 549/420 |
Having -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
195 |
| 549/423 |
Hydroxy or halogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding (h of -oh may be replaced by a substituted or unsubstituted ammonium ion or a group ia or iia light metal) |
104 |
| 549/419 |
Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
210 |
| 549/417 |
Plural chalcogens bonded directly to the hetero ring |
285 |
| 549/418 |
Hydroxy bonded directly at the 3-position and oxygen double bonded directly at the 4-position of the hetero ring (h of -oh may be replaced by a substituted or unsubstituted ammonium ion or a group ia or iia light metal) |
55 |
| 549/428 |
Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
53 |
| 549/425 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
100 |
| 549/426 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
200 |
| 549/424 |
Nitrogen bonded directly to the hetero ring |
100 |
| 549/414 |
Plural hetero rings |
280 |
| 549/415 |
Plural six-membered hetero rings |
283 |
| 549/357 |
Plural ring oxygens in the hetero ring (e.g., 1,2-dioxin, etc.) |
60 |
| 549/358 |
Polycyclo ring system having the hetero ring as one of the cyclos |
61 |
| 549/362 |
Bicyclo ring system having the hetero ring as one of the cyclos |
312 |
| 549/366 |
Nitrogen attached indirectly to the hetero ring by acyclic nonionic bonding |
161 |
| 549/365 |
The ring oxygens are in the 1,2- or 1,3-positions of the hetero ring |
108 |
| 549/363 |
The two cyclos share at least three ring members (i.e., bridged) |
78 |
| 549/364 |
Three or more ring oxygens in the bicyclo ring system |
60 |
| 549/359 |
Tricyclo ring system having the hetero ring as one of the cyclos |
80 |
| 549/361 |
Three or more ring oxygens in the tricyclo ring system (e.g., actinospectacin, etc.) |
60 |
| 549/360 |
Two of the cyclos share at least three ring members (i.e., bridged) |
31 |
| 549/369 |
The ring oxygens are in the 1,3-positions of the hetero ring (e.g., 1,3 dioxane, etc.) |
258 |
| 549/374 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
182 |
| 549/375 |
The chalcogen, x, is in a -c(=x)- group |
166 |
| 549/372 |
Chalcogen or -c(=x), wherein x is chalcogen, bonded directly to the hetero ring |
128 |
| 549/373 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
185 |
| 549/371 |
Nitrogen bonded directly to the hetero ring |
39 |
| 549/370 |
Plural hetero rings |
134 |
| 549/376 |
Preparing by reacting an aldehyde with a compound containing acyclic carbon to carbon unsaturation |
19 |
| 549/377 |
The ring oxygens are in the 1,4-positions of the hetero ring (e.g., 1,4 dioxane, etc.) |
68 |
| 549/378 |
Chalcogen attached directly or indirectly to the hetero ring by nonionic bonding |
122 |
| 549/379 |
Plural chalcogens bonded directly to the hetero ring |
35 |
| 549/380 |
Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
33 |
| 549/367 |
Three or more ring oxygens in the hetero ring |
18 |
| 549/368 |
Trioxane per se |
57 |
| 549/381 |
Polycyclo ring system having the hetero ring as one of the cyclos |
71 |
| 549/396 |
Bicyclo ring system having the hetero ring as one of the cyclos |
197 |
| 549/398 |
The bicyclo ring system consists of the hetero ring and a six-membered carbocyclic ring |
177 |
| 549/406 |
Carbocyclic ring bonded directly to the hetero ring of the bicyclo ring system (e.g., flavanes, etc.) |
160 |
| 549/408 |
Chalcogen bonded directly to the carbocyclic ring of the bicyclo ring system (e.g., tocopherols, etc.) |
223 |
| 549/409 |
Chalcogen double bonded or plural chalcogens bonded directly to the carbocyclic ring (e.g., coenzyme q, etc.) |
28 |
| 549/410 |
Chalcogen of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens, bonded directly to the carbocyclic ring of the bicyclo ring system (e.g., tocopherol esters, etc.) |
78 |
| 549/411 |
Preparing from 1,4-di-oxygen substituted carbocyclic ring (e.g., of p benzoquinones, p-hydroquinones, etc.) |
41 |
| 549/412 |
Processes for chemical modification of substituents on the carbocyclic ring of the bicyclo ring system (e.g., alkylation of tocopherols, etc.) |
30 |
| 549/413 |
Purification or recovery |
51 |
| 549/399 |
Chalcogen bonded directly to the hetero ring |
262 |
| 549/401 |
Chalcogen bonded directly to the ring carbon para to the ring oxygen (e.g., chromones, etc.) |
207 |
| 549/403 |
Benzene ring bonded directly to the hetero ring (e.g., flavones, etc.) |
196 |
| 549/402 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
113 |
| 549/400 |
Plural chalcogens bonded directly to the hetero ring |
101 |
| 549/407 |
Chalcogen or nitrogen attached indirectly to the hetero ring by acyclic nonionic bonding |
243 |
| 549/405 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the bicyclo ring system |
151 |
| 549/404 |
Nitrogen bonded directly to the bicyclo ring system |
250 |
| 549/397 |
The two cyclos share at least three ring members (i.e., bridged) |
83 |
| 549/382 |
Pentacyclo ring system having the hetero ring as one of the cyclos |
74 |
| 549/383 |
Tetracyclo ring system having the hetero ring as one of the cyclos |
72 |
| 549/384 |
The tetracyclo ring system consists of four six-membered cyclos |
71 |
| 549/385 |
Tricyclo ring system having the hetero ring as one of the cyclos |
84 |
| 549/395 |
Acyclic chalcogen bonded directly to the hetero ring |
16 |
| 549/387 |
Plural ring oxygens in the tricyclo ring system |
119 |
| 549/388 |
The tricyclo ring system consists of three six-membered cyclos (e.g., xanthene, etc.) |
127 |
| 549/392 |
Chalcogen bonded directly to the hetero ring |
54 |
| 549/393 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the tricyclo ring system |
47 |
| 549/390 |
Dibenzo(b,d)pyrans (including hydrogenated) |
89 |
| 549/391 |
Plural chalcogens bonded directly to the tricyclo ring system |
67 |
| 549/389 |
Naphtho-pyrans (including hydrogenated) |
205 |
| 549/394 |
Nitrogen bonded directly to the tricyclo ring system |
48 |
| 549/386 |
Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
59 |
| 549/512 |
The hetero ring is three-membered consisting of one oxygen and two carbons |
160 |
| 549/554 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
156 |
| 549/555 |
Chalcogen and the hetero ring bonded directly to the same carbon (e.g., glycidyl ethers, etc.) |
127 |
| 549/560 |
Carbocyclic ring containing |
157 |
| 549/558 |
Halogen attached indirectly to the hetero ring by nonionic bonding |
23 |
| 549/559 |
Carbocyclic ring containing |
79 |
| 549/556 |
Sulfur or -c(=x)-, wherein x is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
108 |
| 549/557 |
The chalcogen, x, is part of a -c(=x)x- group or a -x-x- group, wherein the x's are the same or diverse chalcogens (e.g., -coo-hch-oxirane, etc.) |
76 |
| 549/561 |
The chalcogen, x, is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
88 |
| 549/562 |
Additional -c(=x)- or other sulfur attached indirectly to the hetero ring |
49 |
| 549/550 |
Cyano, nitrogen, or halogen bonded directly to the hetero ring |
49 |
| 549/563 |
Halogen attached indirectly to the hetero ring by nonionic bonding |
85 |
| 549/548 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
76 |
| 549/549 |
The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
88 |
| 549/551 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
171 |
| 549/552 |
Cyano or nitrogen and the hetero ring bonded directly to the same carbon |
87 |
| 549/553 |
The nitrogen is bonded directly to a -c(=x)- group, wherein x is chalcogen |
87 |
| 549/543 |
Polycyclo ring system having the hetero ring as one of the cyclos |
32 |
| 549/546 |
Bicyclo ring system having the hetero ring as one of the cyclos |
149 |
| 549/547 |
Plural bicyclo ring systems each having a hetero ring as one of the cyclos |
24 |
| 549/544 |
Tetracyclo ring system having the hetero ring as one of the cyclos |
29 |
| 549/545 |
Tricyclo ring system having the hetero ring as one of the cyclos |
64 |
| 549/513 |
Processes |
115 |
| 549/514 |
Epihalohydrin, glycerol monohalohydrin or glycerol dihalohydrin reactant |
46 |
| 549/515 |
Glycidyl ester formed by bonding the oxy of a -coo- group directly to an acyclic carbon which is bonded directly to an oxirane ring |
28 |
| 549/516 |
Glycidyl ether formed by bonding oxygen directly to an acyclic carbon which is bonded directly to an oxirane ring |
35 |
| 549/517 |
Phenolic ether formed |
93 |
| 549/539 |
Ether or -coo- group formed |
43 |
| 549/540 |
Isomerization, halogenation, hydrogenation, or dehydrohalogenation to form compound |
44 |
| 549/518 |
Oxirane ring formed |
107 |
| 549/520 |
By dehydrohalogenation of a halohydrin or by reacting a hypohalite or hypohalous acid with an ethylenically unsaturated compound at the site of unsaturation |
40 |
| 549/521 |
Oxirane ring and chalcogen, cyano, nitrogen, or halogen are bonded directly to the same carbon (e.g., glycidyl ester formed, etc.) |
45 |
| 549/522 |
Oxirane ring is unsubstituted or hydrocarbyl substituted only |
31 |
| 549/519 |
Carbonyl of aldehyde or ketone reacted to form oxirane ring |
67 |
| 549/523 |
Epoxidation at site of ethylenic unsaturation |
170 |
| 549/524 |
Liquid phase epoxidation |
70 |
| 549/532 |
Air or molecular oxygen utilized |
72 |
| 549/533 |
Heavy metal containing catalyst utilized |
122 |
| 549/531 |
Hydrogen peroxide utilized |
280 |
| 549/529 |
Organic hydroperoxide reactant |
194 |
| 549/530 |
Boron containing catalyst utilized |
29 |
| 549/525 |
Organic peracid utilized |
134 |
| 549/528 |
Epoxidizing unsaturated fat or fatty oil, or unsaturated derivative thereof |
11 |
| 549/526 |
In situ formation of the organic peracid from carboxylic acid and hydrogen peroxide |
25 |
| 549/527 |
Epoxidizing unsaturated fat or fatty oil, or unsaturated derivative thereof |
13 |
| 549/534 |
Silver containing catalyst utilized |
184 |
| 549/536 |
Additional heavy metal containing material utilized (e.g., promoter which contains heavy metal utilized, etc.) |
123 |
| 549/535 |
Fluidized catalyst |
14 |
| 549/537 |
Group iia light metal containing material utilized |
52 |
| 549/538 |
Purification or recovery |
43 |
| 549/541 |
Purification or recovery |
160 |
| 549/542 |
By adsorption or by chemical reaction with impurity |
65 |
| 549/201 |
With preservative or stabilizer |
18 |
| 549/205 |
Compound in which the hetero ring is five-membered with preservative or stabilizer |
9 |
| 549/203 |
Cyclic anhydride containing compound with preservative or stabilizer |
15 |
| 549/204 |
Lactone containing compound with preservative or stabilizer |
4 |
| 549/202 |
Oxirane containing compound with preservative or stabilizer |
13 |
| 549/223 |
Xanthene ring system having a benzene ring bonded directly thereto para to the xanthene ring oxygen, wherein the carbon of a -coo- group is bonded directly to the benzene ring ortho to its position of attachment to the xanthene ring system, and spirolactone derivatives thereof (e.g., fluoresceins, chlorofluorans, etc.) |
127 |
| 549/225 |
Nitrogen bonded directly to the xanthene ring system (e.g., rhodols, aminofluorans, etc.) |
54 |
| 549/226 |
Plural nitrogens bonded directly to the xanthene ring system (e.g., 2,6 diaminofluorans, etc.) |
77 |
| 549/227 |
Rhodamines |
87 |
| 549/224 |
The xanthene ring system is three cyclos of a polycyclo ring system having at least four rings (e.g., benz(c)fluorans, etc.) |
63 |
| 549/1 |
Sulfur containing hetero ring (e.g., thiiranes, etc.) |
65 |
| 549/4 |
Boron or silicon containing |
179 |
| 549/3 |
Heavy metal or aluminum containing |
181 |
| 549/5 |
Phosphorus attached directly or indirectly to the hetero ring by nonionic bonding |
88 |
| 549/6 |
The hetero ring is five-membered |
211 |
| 549/8 |
Four chalcogens bonded directly to the same phosphorus |
22 |
| 549/7 |
Plural ring hetero atoms in the hetero ring |
30 |
| 549/9 |
The hetero ring has at least seven members |
133 |
| 549/10 |
Plural ring hetero atoms in the hetero ring |
72 |
| 549/11 |
Plural ring sulfurs in the hetero ring |
90 |
| 549/12 |
Polycyclo ring system having at least three cyclos and having the hetero ring as one of the cyclos |
118 |
| 549/29 |
The hetero ring is five-membered |
222 |
| 549/59 |
Additional hetero ring containing |
439 |
| 549/60 |
Ring oxygen in the additional hetero ring |
756 |
| 549/78 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
320 |
| 549/79 |
The chalcogen, x, is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
359 |
| 549/62 |
Chalcogen bonded directly to ring carbon of the hetero ring |
209 |
| 549/67 |
Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
23 |
| 549/66 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
208 |
| 549/64 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
153 |
| 549/63 |
Nitrogen attached directly to the hetero ring by nonionic bonding |
143 |
| 549/65 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
381 |
| 549/61 |
Cyano bonded directly to the hetero ring |
140 |
| 549/81 |
Halogen attached directly to the hetero ring by nonionic bonding |
36 |
| 549/82 |
Three or more halogens attached directly to the hetero ring by nonionic bonding |
8 |
| 549/70 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring |
192 |
| 549/73 |
Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
66 |
| 549/72 |
Nitrogen or chalcogen attached indirectly to the hetero ring by nonionic bonding |
361 |
| 549/71 |
The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens |
228 |
| 549/68 |
Nitrogen attached directly to the hetero ring by nonionic bonding |
294 |
| 549/69 |
Having -c(=x)-, wherein x is chalcogen, bonded directly to the nitrogen |
161 |
| 549/74 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding |
280 |
| 549/75 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
309 |
| 549/76 |
The chalcogen, x, is in a -c(=x)- group |
298 |
| 549/77 |
Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing |
429 |
| 549/87 |
Plural chalcogens double bonded directly to ring sulfur of the hetero ring |
23 |
| 549/30 |
Plural ring hetero atoms in the hetero ring |
144 |
| 549/40 |
Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
36 |
| 549/31 |
Polycyclo ring system having the hetero ring as one of the cyclos |
73 |
| 549/32 |
Bicyclo ring system having the hetero ring as one of the cyclos |
92 |
| 549/33 |
Chalcogen attached directly to the hetero ring by nonionic bonding |
61 |
| 549/34 |
Three or more ring hetero atoms in the hetero ring |
35 |
| 549/35 |
Two ring sulfurs in the hetero ring |
85 |
| 549/39 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding |
202 |
| 549/36 |
Chalcogen bonded directly to ring carbon of the hetero ring |
42 |
| 549/37 |
Nitrogen or chalcogen attached indirectly to the hetero ring by nonionic bonding |
44 |
| 549/38 |
Nitrogen attached directly to the hetero ring by nonionic bonding |
53 |
| 549/41 |
Polycyclo ring system having the hetero ring as one of the cyclos |
60 |
| 549/49 |
Bicyclo ring system having the hetero ring as one of the cyclos |
204 |
| 549/51 |
Chalcogen attached directly to the bicyclo ring system by nonionic bonding |
249 |
| 549/52 |
Chalcogen attached directly to the hetero ring by nonionic bonding |
124 |
| 549/53 |
Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
94 |
| 549/56 |
Halogen attached directly or indirectly to the bicyclo ring system by nonionic bonding |
52 |
| 549/55 |
Nitrogen attached directly or indirectly to the bicyclo ring system by nonionic bonding |
130 |
| 549/54 |
Plural chalcogens bonded directly to the bicyclo ring system |
79 |
| 549/58 |
Chalcogen attached indirectly to the bicyclo ring system by nonionic bonding |
393 |
| 549/57 |
Nitrogen or a -c(=x)- group, wherein x is chalcogen, attached directly to the bicyclo ring system by nonionic bonding |
282 |
| 549/50 |
Plural ring hetero atoms in the bicyclo ring system |
95 |
| 549/42 |
Tetracyclo ring system having the hetero ring as one of the cyclos |
42 |
| 549/43 |
Tricyclo ring system having the hetero ring as one of the cyclos |
137 |
| 549/44 |
Chalcogen attached directly to the tricyclo ring system by nonionic bonding |
75 |
| 549/45 |
Chalcogen attached directly to the hetero ring by nonionic bonding |
34 |
| 549/46 |
Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
36 |
| 549/47 |
Halogen attached directly to the tricyclo ring system by nonionic bonding |
16 |
| 549/48 |
Nitrogen attached directly or indirectly to the tricyclo ring system by nonionic bonding |
61 |
| 549/83 |
The compound consists of the ring sulfur, carbon, and hydrogen |
59 |
| 549/86 |
Process of alkylating the hetero ring |
9 |
| 549/84 |
Process of forming the hetero ring from acyclic reactants only |
6 |
| 549/85 |
Metal containing catalyst utilized |
5 |
| 549/80 |
Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing |
109 |
| 549/88 |
The hetero ring is four-membered |
56 |
| 549/89 |
Plural ring hetero atoms in the hetero ring |
31 |
| 549/13 |
The hetero ring is six-membered |
289 |
| 549/28 |
Chalcogen or nitrogen attached directly to the hetero ring by nonionic bonding |
232 |
| 549/14 |
Plural ring hetero atoms in the hetero ring |
137 |
| 549/15 |
Polycyclo ring system having the hetero ring as one of the cyclos |
100 |
| 549/16 |
Tricyclo ring system having the hetero ring as one of the cyclos |
65 |
| 549/17 |
Plural ring sulfurs in the hetero ring |
43 |
| 549/18 |
Three or more ring hetero atoms in the hetero ring |
20 |
| 549/19 |
Plural ring sulfurs in the hetero ring |
28 |
| 549/20 |
Two ring sulfurs in the hetero ring |
69 |
| 549/21 |
Chalcogen or nitrogen attached directly to the hetero ring by nonionic bonding |
95 |
| 549/22 |
Chalcogen or nitrogen attached indirectly to the hetero ring by nonionic bonding |
143 |
| 549/23 |
Polycyclo ring system having the hetero ring as one of the cyclos |
361 |
| 549/24 |
The polycyclo ring system has at least four cyclos |
42 |
| 549/25 |
Chalcogen attached directly to the hetero ring by nonionic bonding |
30 |
| 549/26 |
Tricyclo ring system having the hetero ring as one of the cyclos |
100 |
| 549/27 |
Chalcogen attached directly to the hetero ring by nonionic bonding |
102 |
| 549/90 |
The hetero ring is three-membered and has chalcogen or nitrogen attached directly or indirectly thereto by nonionic bonding |
52 |
| 549/2 |
With preservative or stabilizer |
11 |