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Class Information
Number: 544/335
Name: Organic compounds -- part of the class 532-570 series > 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) > Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) > The six-membered hetero ring consists of two nitrogens and four carbons (e.g., 1,2-diazines, etc.) > 1,3-diazines > Chalcogen attached indirectly to the diazine ring by nonionic bonding
Description: Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the six-membered hetero ring by nonionic bonding.










Patents under this class:
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Patent Number Title Of Patent Date Issued
4755323 Liquid-crystalline dielectrics Jul. 5, 1988
4755599 3-phenyl-2-propeneamine derivatives, their preparation and composition containing them Jul. 5, 1988
4753957 Substituted 2,4-imidazolidinediones and fungicidal compositions Jun. 28, 1988
4752414 Nitrogen-containing heterocyclic compounds Jun. 21, 1988
4751225 Certain 2-pyridyloxy-lower alkylene-oxy-phenoxy compounds, thio-and methylene analogues having insecticidal properties Jun. 14, 1988
4748160 Angiotensin converting enzyme inhibitors and their formulation and use as pharmaceuticals May. 31, 1988
4745652 New tetra-aminopyrimidine derivatives and their use in hair-dyeing preparations May. 24, 1988
4744918 Liquid crystal phase May. 17, 1988
4732901 Certain pyridyl, thienyl or furyl propenoic acids or esters having anti-inflammatory anti-allergic properties Mar. 22, 1988
4732983 Pyschotropic polycyclic imides Mar. 22, 1988
4726911 Heterocyclic compounds Feb. 23, 1988
4727073 Pyrimidine derivatives and composition of the same Feb. 23, 1988
4727075 Fungicidal 5-substituted pyrimidine derivatives, compositions, and method of use therefor Feb. 23, 1988
4727142 Process for the preparation of imidates Feb. 23, 1988
4725688 Liquid crystal compound Feb. 16, 1988
4723005 Anisotropic compounds and liquid crystal mixtures Feb. 2, 1988
4721783 Anti-spasmodic agents having a heterocyclic ring Jan. 26, 1988
4716175 Saturated fatty acid amides as inhibitors of acyl-CoA:cholesterol acyltransferase Dec. 29, 1987
4713197 Nitrogen-containing heterocyclic compounds Dec. 15, 1987
4713456 Process for the preparation of 5-acylpyrimidines Dec. 15, 1987
4708732 2-(pyrimidinecarbonyl)-1,3-cyclohexanediones and their use as herbicidal agents Nov. 24, 1987
4709030 Novel liquid crystal mixtures Nov. 24, 1987
4703119 Intermediates of optically active 1,4-dihydropyridines Oct. 27, 1987
4701447 N-((2-nitro)phenyl)-N' (organic acid) guanidine anthelmintics Oct. 20, 1987
4698340 Pyrimidine derivatives, processes for preparation thereof and composition containing the same Oct. 6, 1987
4696930 N-(heteroarylalkyl)acylanilide derivatives as antiarrhythmic agents Sep. 29, 1987
4697015 Liquid crystalline pyrimidinyl phenyl carboxylic acid ester derivatives Sep. 29, 1987
4692450 Phenyl-pyrimidinium, thiazolium or imidazolium salts and use in inhibiting intestinal resorption of cholesterol and bile salts Sep. 8, 1987
4689329 5-substituted octahydroindolizine analgesics compounds and 7-keto intermediates Aug. 25, 1987
4686291 Preparation of methyl ketones Aug. 11, 1987
4686309 3-phenyl-2-propeneamine derivatives, their preparation and compositions containing them Aug. 11, 1987
4684476 Pyrimidine derivative and liquid crystal composition containing same Aug. 4, 1987
4683078 Dihalogeno-aromatic compound Jul. 28, 1987
4681884 Diazine-ethenylphenyl oxamic acids and esters and salts thereof Jul. 21, 1987
4678501 Certain pyrazinyl 1,3 cycloalkanedione derivatives having herbicidal activity Jul. 7, 1987
4678795 1-pyridylmethyl-2-nitromethylene-1,3-diazacycloalkane insecticides Jul. 7, 1987
4676604 Liquid crystals Jun. 30, 1987
4672066 Derivatives of 4-acetyl-3-hydroxy-2-alkyl-phenoxycarboxylic acids Jun. 9, 1987
4670041 Oxabicycloalkane herbicides Jun. 2, 1987
4670569 5-fluoro-PGI.sub.2 compounds Jun. 2, 1987
4668425 Novel liquid crystal compound May. 26, 1987
4666627 4-Heterocyclylvinyl-4-'styryl-biphenyls May. 19, 1987
4663334 Heteroaromatic acetylenes useful as antihypertensive agents May. 5, 1987
4661488 Pyrimidine substituted-2,2-dimethylcyclopropane carboxylates useful for combating insect and acarine pests at a locus Apr. 28, 1987
4661494 N-substituted-N',N'-disubstituted glycinamide fungicides Apr. 28, 1987
4659362 Herbicidal 5-pyrimidylcyclohexan-1,3-dione derivatives Apr. 21, 1987
4659502 Ethane derivatives Apr. 21, 1987
4654346 Fungicidal N,N-disubstituted-heterocyclic carboxamides Mar. 31, 1987
4654421 4-substituted phenyl crotyl ether derivative Mar. 31, 1987
4647570 Pesticidal novel nitromethylene derivatives Mar. 3, 1987

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