CAS Number Index

A CAS Registry Number,also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganiccompounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It currently identifies more than 144 million unique organic and inorganic substances and 67 million protein and DNA sequences,plus additional information about each substance. It is updated with around 15,000 additional new substances daily.（information coming from wikipedia.org)

Name CAS Number
6-methyl-2-(prop-2-en-1-ylsulfanyl)-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one 2326904-05-4
(2S)-2-amino-5-cyclopropylhexan-3-one 2137426-71-0
2-methyl-N-(2-methylphenyl)imidazo[1,2-b]pyridazine-6-carboxamide 2741943-81-5
1,3-dimethyl-N-(quinolin-6-yl)-1H-pyrazole-5-carboxamide 2326688-31-5
2-(but-3-en-1-ylsulfanyl)-6-methyl-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one 2742037-05-2
N-(4-bromo-2-methylphenyl)-2-methylimidazo[1,2-b]pyridazine-6-carboxamide 2742060-70-2
[3-(4-fluorophenyl)-1H-pyrazol-4-yl]methanesulfonyl fluoride 2229568-90-3
1-Benzyl-4-{2-tert-butylimidazo[1,2-b]pyridazine-6-carbonyl}piperazine 2742065-92-3
1-[(4-Fluorophenyl)methyl]-4-propyl-1,2,3,4-tetrahydropyrazine-2,3-dione 2741958-12-1
2-[4-(2-Fluorophenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetonitrile 2742007-65-2
Methyl 6-oxo-2-{[(oxolan-3-yl)methyl]sulfanyl}-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate 2742023-98-7
N-(2-methoxyphenyl)-5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrole-2-carboxamide 2742037-29-0
N-cyclopropyl-1-[(naphthalen-1-yl)methyl]-1H-1,2,3-triazole-4-carboxamide 2742024-72-0
6-{5-[(3,5-difluorophenyl)methanesulfonyl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}-9-ethyl-9H-purine 2741896-39-7
2-Amino-3-(5-ethyl-1,3,4-thiadiazol-2-yl)propanoic acid 2145421-12-9
1-[(4-methoxyphenyl)methyl]-N-(5,6,7,8-tetrahydronaphthalen-1-yl)-1H-1,2,3-triazole-4-carboxamide 2742042-77-7
Tert-butyl 2-cyano-2-(6-phenylpyridazin-3-yl)acetate 2741927-23-9
4-fluoro-3-methyl-N-(1,3,4-thiadiazol-2-yl)benzene-1-sulfonamide 2326542-49-6
1-[(4-Chlorophenyl)methyl]-4-{[(5-phenyl-1,3,4-oxadiazol-2-yl)sulfanyl]methyl}pyrrolidin-2-one 2741919-32-2
N-benzyl-4-hydroxy-2-(4-phenyl-1H-1,2,3-triazol-1-yl)butanamide 2741909-00-0
2-[(3-fluorophenyl)amino]-5H-[1,3,4]thiadiazolo[2,3-b]quinazolin-5-one 2742036-14-0
N-(4-methoxy-2,4-dimethylpentyl)thiophen-3-amine 2137984-83-7
O-[2-(1-methyl-1H-1,2,3-triazol-5-yl)propan-2-yl]hydroxylamine 2228484-29-3
5-[1-(Methylamino)cyclopropyl]thiophene-3-carbonitrile 2228542-51-4
4-bromo-N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-3-ethoxybenzenesulfonamide 2741900-13-8
6-Cyclopropyl-2-(octylsulfanyl)-3,4-dihydropyrimidin-4-one 2742025-64-3
1-(4-Tert-butylbenzoyl)-4-(2,6-dimethylphenyl)piperazine 2741934-19-8
Methyl 6-oxo-2-(propylsulfanyl)-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate 2742040-57-7
Methyl 2-(but-2-yn-1-ylsulfanyl)-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate 2742042-37-9
Methyl 2-[(3-methylbutyl)sulfanyl]-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate 2741938-03-2
N-[4-(3,4-dichloro-2-methoxybenzenesulfonamido)phenyl]acetamide 2742006-21-7
1-(cyclohexylmethyl)-3-[(4-methoxyphenyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidine-2,4-dione 2741933-19-5
N-{4-[(trifluoromethyl)sulfanyl]phenyl}-1,3-benzoxazol-2-amine 2327771-89-9
3,5-diethyl 2,6-dimethyl-4-[1-(3-nitrophenyl)-1H-1,2,3-triazol-4-yl]-1,4-dihydropyridine-3,5-dicarboxylate 2742011-12-5
N-(2,4-dichlorophenyl)-3-(4-fluorophenyl)-1-methyl-1H-pyrazole-5-carboxamide 2326539-37-9
3-cyclopropyl-8-fluoro-5-methyl-2-sulfanylidene-1H,2H,3H,4H,5H-pyrimido[5,4-b]indol-4-one 2741958-79-0
5-[(2-chloro-4-fluorophenyl)methyl]-2-(4-fluorophenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one 2324672-07-1
2-ethyl-1-{[1-(oxolane-3-carbonyl)azetidin-3-yl]methyl}-1H-imidazole 2742016-13-1
6-[5-(5-Fluoropyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]-2-methyl-2,3-dihydropyridazin-3-one 2741921-85-5
2-[1-(1-methyl-1H-imidazole-5-carbonyl)-octahydropyrrolo[3,4-b]pyrrol-5-yl]-4-(trifluoromethyl)pyridine 2741949-05-1
N-{2-[(2-methylprop-2-en-1-yl)sulfanyl]-4-oxo-3,4-dihydroquinazolin-3-yl}-5-oxo-1-phenylpyrrolidine-3-carboxamide 2741889-89-2
N-(5-methoxy-1,3-benzothiazol-2-yl)-3,5-bis(trifluoromethyl)benzamide 2328247-04-5
1-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-4,4,4-trifluorobutan-1-one 2742040-13-5
3-[(2-ethyl-1H-imidazol-1-yl)methyl]-N-[(oxolan-2-yl)methyl]azetidine-1-carboxamide 2741957-27-5
2-[1-(2,5-Dimethylfuran-3-carbonyl)-octahydropyrrolo[2,3-c]pyrrol-5-yl]-5-fluoropyridine 2742068-72-8
4-Methyl-6-[5-(1,2,3-thiadiazole-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyrimidine 2741907-20-8
N-[(2,4-dichlorophenyl)methyl]-3-[2-(4-fluorophenyl)-4-oxo-4H,5H-pyrazolo[1,5-a]pyrazin-5-yl]propanamide 2741929-68-8
1-{[1-(5-bromofuran-2-carbonyl)azetidin-3-yl]methyl}-2-ethyl-1H-imidazole 2742055-34-9
4-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidine-1-carbonyl}-3-fluoropyridine 2742079-51-0
3-(2-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-2-oxoethyl)-6-methyl-3,4-dihydropyrimidin-4-one 2742048-27-5

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