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Class Information
Number: 544/296
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 > Plural diazine rings > Plural 1,3-diazine rings
Description: Compounds which contain at least two of the six-membered hetero rings, each having its nitrogens in the 1- and 3- positions, and carbons in the remaining four positions.










Patents under this class:
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Patent Number Title Of Patent Date Issued
4764636 Optically active benzoic ester derivatives Aug. 16, 1988
4762926 Process for the preparation of the 2-substituted-5-vinylpyrimidines Aug. 9, 1988
4761473 Novel compositions prepared from organic amines and nitrogen-containing aromatic heterocyclic compounds substituted with at least one group selected from carboxylic acid, carboxylic acid ester Aug. 2, 1988
4760083 3,3-disubstituted indolines Jul. 26, 1988
4755323 Liquid-crystalline dielectrics Jul. 5, 1988
4755512 Pharmaceutically useful dihydropyridinyldicarboxylate amides and esters incorporating arylpiperazinylalkyl moities Jul. 5, 1988
4753940 Barbituric acid derivatives Jun. 28, 1988
4752414 Nitrogen-containing heterocyclic compounds Jun. 21, 1988
4751309 Methine dyes and preparation thereof Jun. 14, 1988
4749698 Antihypertensive derivatives Jun. 7, 1988
4748165 Amidine derivatives May. 31, 1988
4748105 Rapid bleach fixing of a silver halide color photographic light-sensitive material using an organic acid ferric complex May. 31, 1988
4740229 Cyanoheterocyclic sulfonylureas Apr. 26, 1988
4737184 Herbicidal sulfonamides Apr. 12, 1988
4730045 Method for making pyrimidin-2-one and imidazol-2-one copolymerizable monomer derivatives Mar. 8, 1988
4725303 N'-(substituted-pyrimidin-2-yl) -N"-amino-N"'-(substituted-benzenesulphonyl)-guanidines as herbicides Feb. 16, 1988
4725679 Process for producing 2-amino-alkenylsulfonylurea derivatives Feb. 16, 1988
4723987 Herbicidal sulfonamides Feb. 9, 1988
4723005 Anisotropic compounds and liquid crystal mixtures Feb. 2, 1988
4713456 Process for the preparation of 5-acylpyrimidines Dec. 15, 1987
4713313 Photographic system and novel compounds Dec. 15, 1987
4713197 Nitrogen-containing heterocyclic compounds Dec. 15, 1987
4707548 Bisisoindoline pigments Nov. 17, 1987
4705558 Herbicidal pyrazolesulfonamides Nov. 10, 1987
4705791 Substituted pyrimidin-2-ones and the salts thereof Nov. 10, 1987
4704227 Liquid crystal compounds Nov. 3, 1987
4701447 N-((2-nitro)phenyl)-N' (organic acid) guanidine anthelmintics Oct. 20, 1987
4699649 Herbicidal heterocyclicbenzylsulfonamides Oct. 13, 1987
4699647 Herbicidal sulfonamides Oct. 13, 1987
4698091 2-phenylpyrimidines, 2-naphthylpyrimidines and 2-heterocyclylpyrimidines as safeners for protecting cultivated plant against phytotoxic damage caused by herbicides Oct. 6, 1987
4696927 4-(2-pyrimidinyl)-1-piperazinyl heterocyclic carbonyl derivatives Sep. 29, 1987
4696930 N-(heteroarylalkyl)acylanilide derivatives as antiarrhythmic agents Sep. 29, 1987
4695405 Process for quenching fluorescence, and new cationic or amphoteric aromatic nitro compounds Sep. 22, 1987
4693744 Herbicidal ortho-(azinyl)-benzenesulfonamides Sep. 15, 1987
4690705 Herbicidal sulfonamides Sep. 1, 1987
4689069 Herbicidal acetylenic pyrimidines and triazines Aug. 25, 1987
4684656 1,2,3,4-tetrahydro-6-substituted-4-aryl-3-(substituted sulfonyl)-2-thioxo(or oxo)-5-pyrimidinecarboxylic acids and esters and method of using them to lower blood pressure Aug. 4, 1987
4684393 Herbicidal thiophenesulfonamides Aug. 4, 1987
4683078 Dihalogeno-aromatic compound Jul. 28, 1987
4678498 Herbicidal sulfonamides Jul. 7, 1987
4675406 Substituted pyrimidinones Jun. 23, 1987
4665177 Tetrahydropyrimidines, a process for their production and their use as catalysts in the production of polyurethane plastics May. 12, 1987
4663341 Insecticidal n-aryl-3-aryl-4,5-dihydro-1h-pyrazole-1-carboxamides May. 5, 1987
4659502 Ethane derivatives Apr. 21, 1987
4657579 Novel N-(5-pyrimidinyl)-chloroacetamides Apr. 14, 1987
4656290 Process for preparing thio, dithio or carbonyl compounds Apr. 7, 1987
4649141 Pyrimidine compounds Mar. 10, 1987
4640796 1,4-dipyrimidinylbenzene derivative Feb. 3, 1987
4639519 2-substituted alkylaminopyrimidones useful as H.sub.2 -antagonists and antiinflamatory agents Jan. 27, 1987
4639264 Herbicidal N-arylsulfonyl-N'-(4-mercaptomethylpyrimdinyl)-ureas Jan. 27, 1987

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