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Class Information
Number: 544/320
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 bonded directly to diazine ring carbon > At 4- or 6-position > Nitrogen attached directly at 2-position by nonionic bonding
Description: Compounds wherein nitrogen is attached directly to the 2-position of the six-membered hetero ring by nonionic bonding.










Sub-classes under this class:

Class Number Class Name Patents
544/321 Carbocyclic ring containing 775


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
4906278 Herbicidal heterocyclic sulfonamides Mar. 6, 1990
4906283 Herbicidal sulfonamides Mar. 6, 1990
4906282 Herbicidal sulfonamides Mar. 6, 1990
4904299 Herbicidal N-hydroxy-N'-sulfonylguanidines Feb. 27, 1990
4904783 Herbicidal compositions Feb. 27, 1990
4902336 Herbicidal compositions Feb. 20, 1990
4897108 Herbicidal sulfonamides Jan. 30, 1990
4892575 Herbicidal sulfonamides Jan. 9, 1990
4889553 Herbicides Dec. 26, 1989
RE33125 3- and 5-[3-(1-arylureido)]-1,2,4-triazoles Dec. 5, 1989
4881968 Herbicidal sulfonamides Nov. 21, 1989
4881965 Wheat growing process utilizing selective herebicide Nov. 21, 1989
4881964 N-heterocyclosulfonyl-N'-pyrimidinylureas Nov. 21, 1989
4880932 Substituted guanidine derivatives Nov. 14, 1989
4877792 Heteroaryloxy-beta-carboline derivatives, their preparation and their use as medicinal agents Oct. 31, 1989
4876259 3,3-disubstituted indolines Oct. 24, 1989
4871743 L-glutamic acid derivatives Oct. 3, 1989
4868302 Process for the preparation of TAHP Sep. 19, 1989
4866061 Aryl-substituted naphthyridine and pyridopyrazine derivatives Sep. 12, 1989
4863947 N-aryl-3-aryl-4,5-dihydro-1H-pyrazole-1-carboxamides and methods of their production Sep. 5, 1989
4859679 Antiulcer (alkyldithio) quinoline derivatives Aug. 22, 1989
4854962 Herbicidal sulfonamides Aug. 8, 1989
4853025 Benzylsulfonylureas and arylsulfamoylureas Aug. 1, 1989
4851406 Heterocyclic-substituted indoles and pharmaceutical compositions containing them Jul. 25, 1989
4849424 Pyrimidine derivatives Jul. 18, 1989
4844727 Herbicidal sulfonamides Jul. 4, 1989
4840661 Sulphonyliso(thio)urea derivatives and herbicidal use thereof Jun. 20, 1989
4838926 Herbicidal pyridine sulfonamides Jun. 13, 1989
4833249 Isothiazolone 1,1-dioxide derivatives with psychotropic activity May. 23, 1989
4830660 Imidazolesulfonamide derivatives and herbicides May. 16, 1989
4831138 Process for the preparation of aminopyrimidines May. 16, 1989
4826528 Herbicidally effective sulfonylureas May. 2, 1989
4826854 Certain cycloalka-(b)-pyrazolo(3,4-d)-pyridin-3-one derivatives May. 2, 1989
4826853 6,11-Dihydro-11-(N-substituted-4-piperidylidene)-5H-benzo(5,6)cyclohepta( 1,2-B)pyridines and compositions and methods of use May. 2, 1989
4826843 Cerebral function enhancing diazinylpiperidine derivatives May. 2, 1989
4826531 Pyridine derivatives and their uses as fungicides and insecticides May. 2, 1989
4824949 Process for the preparation of pyrimidines Apr. 25, 1989
4822402 Thiophenesulfonamide compounds, and herbicidal compositions containing them Apr. 18, 1989
4822403 Herbicidal sulfonamides Apr. 18, 1989
4820710 Benzimidazole derivatives and pharmaceutical compositions containing them Apr. 11, 1989
4808211 N-arylsulfonyl-N'-pyrimidyl ureas Feb. 28, 1989
4806542 Isohexide pyrimidines triazines, triazoles and imidazoles useful as cytostatic Feb. 21, 1989
4801327 Herbicidal sulfonamides Jan. 31, 1989
4797484 Process for the preparation of N'-sulphonyl- and N',N"-bis-sulphonyl-guanidine derivatives Jan. 10, 1989
4792606 Process for the preparation of dimeric aromatic acyl cyanides Dec. 20, 1988
4790869 Sulfonamide compounds and salts thereof, herbicidal compositions containing them Dec. 13, 1988
4789465 Herbicidal pyridine N-oxide sulfonylureas Dec. 6, 1988
4789393 Herbicidal pyridine sulfonamides Dec. 6, 1988
4786734 Herbicidal pyridine sulfonamides Nov. 22, 1988
4783468 Insecticidal 5-pyrimidine carbonitriles Nov. 8, 1988

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