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
(3S,7AS)-3-(tert-butyl)tetrahydro-1H,3H-pyrrolo[1,2-c]oxazol-1-one 172140-59-9
1,1-Dimethylethyl 2-[(hydroxyamino)carbonyl]-3-oxo-1-piperidinecarboxylate 122019-54-9
7-Chloro-2-hydrazino-4-methylquinoline hydrochloride 1367706-41-9
8-Bromo-2-hydrazino-4-methylquinoline hydrochloride 1367706-59-9
tert-Butyl 3-bromo-3-methyl-2-oxopyrrolidine-1-carboxylate 171201-54-0
2,3-Dichloro-5-(difluoromethoxy)cinnamic acid 1807411-41-1
8-Bromo-4-hydroxyquinoline-3-carbohydrazide 1333255-49-4
8-Chloro-3,4-dibromo-2-methylquinoline 1333255-38-1
2-Fluoro-2-[(oxan-2-yl)methyl]propanedioic acid 2098056-59-6
N-(azetidin-3-yl)-6-chloro-2-methylpyrimidin-4-amine 2090590-40-0
8-Fluoro-2-hydrazino-4-methylquinoline hydrochloride 1367706-46-4
8-Methoxy-4-(piperazin-1-yl)quinoline hydrochloride 1333252-19-9
1-(6-Chloro-2-methylpyrimidin-4-yl)azetidine-3-carboxylic acid 2091160-18-6
(R)-1-(4,4-Difluorocyclohexyl)-8'-methylhexahydro-1'H-spiro[azetidine-3,6'-pyrazino[2,1-c][1,4]oxazine] 2182755-99-1
5-Cyclopropyl-1-(3-nitrophenyl)-1H-1,2,4-triazole-3-carboxylic acid 2060052-30-2
3-Chloro-6-(3-methylphenyl)-4-(trifluoromethyl)pyridazine 1271475-10-5
3-{1-[(benzyloxy)carbonyl]piperidin-4-yl}-1-methyl-1H-pyrazole-5-carboxylic acid 2059946-87-9
(5R)-5-[(1R)-2-(Cyclohexylsulfanyl)-1-hydroxyethyl]-3,4-dihydroxy-2,5-dihydrofuran-2-one 2059917-16-5
1-{[1,2,4]Triazolo[4,3-a]pyrazin-8-yl}piperidine 1878022-44-6
tert-Butyl 5-amino-8-cyano-1,2,3,4-tetrahydroisoquinoline-2-carboxylate 2060060-35-5
(5R)-3,4-Dihydroxy-5-[(1R)-1-hydroxy-2-[(5-methyl-4H-1,2,4-triazol-3-yl)sulfanyl]ethyl]-2,5-dihydrofuran-2-one 2059911-40-7
6-Bromo-8-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-amine 1337245-19-8
8-Bromo-2,3,4,5-tetrahydro-1H-benzo[c]azepin-5-amine dihydrobromide 1798793-67-5
6,7-Dimethoxy-2-(propan-2-yl)-1,2-dihydrophthalazin-1-one 2060027-67-8
3-(3-Methyl-1,2-oxazol-5-yl)pentan-3-amine 2059971-69-4
5-Ethynyl-1-methyl-1H-benzo[d]imidazole 1934871-82-5
rac-(2R,3S,4S)-4-hydroxy-1-methyl-2-(1-methyl-1H-pyrazol-4-yl)-5-oxopyrrolidine-3-carboxylic acid 2089246-08-0
tert-butyl 3-(aminomethyl)-1-methyl-1H-pyrazole-4-carboxylate 2060030-07-9
4-Bromo-2-chloro-1-(2,2,2-trifluoroethyl)benzene 2080412-64-0
6-chloro-4-hydrazinyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine 2080412-73-1
4-Chloro-5,6,7,8-tetrahydro-1,7-naphthyridine-2-carboxylic acid 2092852-06-5
Rel-(3aR,3bS,5s,6aR,6bS)-2-(tert-butoxycarbonyl)decahydrocyclopenta[3,4]cyclobuta[1,2-c]pyrrole-5-carboxylic acid 2137102-10-2
1-[(tert-Butoxy)carbonyl]-2-methyl-4,5-dihydro-1H-pyrrole-3-carboxylic acid 2091166-85-5
4-[2-(Piperidin-4-yl)pyrimidin-4-yl]morpholine 2060043-10-7
1,3-Dimethylazetidine-3-carbohydrazide 2089255-13-8
Glycine, N-[[4-[[(5-fluoro-6-methyl-2-benzothiazolyl)amino]carbonyl]-2-morpholinyl]methyl]-N-methyl- 2039230-00-5
1-Cyclobutyl-3-methylazetidine-3-carbohydrazide 2080412-60-6
2-Amino-4-(trifluoromethyl)thiophene-3-carboxamide 2060031-38-9
5-Amino-4-(ethoxycarbonyl)-3-(trifluoromethyl)thiophene-2-carboxylic acid 2137815-60-0
Tert-butyl 2-(aminomethyl)pyrimidine-5-carboxylate 2138152-08-4
4-(4-Methylpiperazin-1-yl)-2-(pyridin-2-yl)thieno[2,3-d]pyrimidine-5-carboxylic acid 2060000-39-5
6-Nitro-[1,2,4]triazolo[1,5-a]pyridine-2-sulfonyl fluoride 2092531-53-6
3-(4-Fluoro-5,6,7,8-tetrahydronaphthalen-1-yl)propanoic acid 2089277-27-8
3-{1-[(Tert-butoxy)carbonyl]azetidin-3-yl}prop-2-ynoic acid 2059954-20-8
3-(Bromomethyl)-4-chloropyridine-2-carboxylic acid 2090416-90-1
Tert-butyl 2-chloro-4-(difluoromethyl)-1,3-thiazole-5-carboxylate 2060024-91-9
2-methyl-5-{5H,6H,7H,8H-pyrido[4,3-c]pyridazin-3-yl}-octahydropyrrolo[3,4-c]pyrrole, cis 2059908-10-8
Methyl 2-chloro-5H-pyrrolo[3,2-d]pyrimidine-4-carboxylate 2089277-65-4
2-(6-Fluoro-1H-indol-3-yl)-N-methyl-2-oxoacetamide 2089257-38-3
Methyl 8-methyl-1,2,3,4-tetrahydroquinoline-6-carboxylate 2089256-99-3

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