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
1-(4-tert-butylphenyl)-1H-pyrazole-5-sulfonyl chloride 2172577-46-5
2-(Difluoromethyl)-1,2-dimethylcyclopentan-1-ol 2171960-18-0
1-[2-(4-Bromo-3-fluorophenyl)propan-2-yl]cyclopropan-1-amine 2229286-80-8
tert-Butyl 1-(methoxymethyl)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate 2852765-98-9
4-chloro-2-(4,5-diiodo-1H-imidazol-1-yl)benzaldehyde 1881993-26-5
1-methyl-3-(3-methyl-1H-pyrazol-1-yl)-1H-pyrazole-4-carbaldehyde 2143024-13-7
3-(2,4-dimethyl-1H-imidazol-1-yl)-5-fluoropyridine-4-carbaldehyde 2172223-79-7
4-formyl-1-(oxolan-3-yl)-1H-pyrazole-3-carboxylic acid 2169200-55-7
4-[5-chloro-3-(methoxymethyl)-1H-pyrazol-1-yl]phenol 2167427-00-9
4-{1H-pyrazolo[4,3-b]pyridin-1-yl}phenol 2168395-94-4
2-amino-4-(2-methylcyclopropyl)-1H-pyrrole-3-carbonitrile 2169073-87-2
5-(1-Methylcyclobutyl)oxolan-2-one 2141349-09-7
3-(Chlorosulfonyl)-6-methoxy-2-methylbenzoic acid 2166721-77-1
4-(bromomethyl)-1-methyl-3-(3-methylbutyl)-1H-pyrazole 2168762-60-3
6-{[2-(Prop-2-yn-1-ylsulfanyl)ethyl]amino}pyrimidine-4-carboxylic acid 1852756-35-4
5-[(Prop-2-en-1-yl)(prop-2-yn-1-yl)amino]pyridine-2-carboxylic acid 1876116-57-2
3-[(2-Hydroxypent-4-yn-1-yl)amino]pyridine-4-carboxylic acid 2162702-84-1
Methyl 2-(1-bromobutyl)-1,3-thiazole-5-carboxylate 2169195-13-3
Methyl 2-(1-bromoethyl)-4-methyl-1,3-thiazole-5-carboxylate 2168000-93-7
Methyl 2-(1-bromo-2-cyanoethyl)-4-methyl-1,3-thiazole-5-carboxylate 2167364-08-9
Methyl 2-(1-bromo-2-fluoro-2-methylpropyl)-1,3-thiazole-4-carboxylate 2167485-69-8
2-(1-Bromo-2-methoxypropyl)-4,5-dimethyl-1,3-thiazole 2166790-79-8
1-(But-3-en-2-yl)-3-[3-(dimethylamino)propyl]thiourea 2166832-90-0
1-(But-3-en-2-yl)-3-[2-(dimethylamino)ethyl]thiourea 1862877-95-9
Tert-butyl 3-(1,3-thiazol-4-yl)prop-2-ynoate 2138019-28-8
3-(But-3-en-2-yl)-1-[(4-chlorophenyl)methyl]thiourea 2169627-38-5
3-(But-3-en-2-yl)-1-[(3-fluorophenyl)methyl]thiourea 2167016-80-8
3-(But-3-en-2-yl)-1-(3-iodophenyl)thiourea 2168821-86-9
methyl 4-(4-aminopyridin-3-yl)-5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate 2137994-84-2
methyl 4-[3-(bromomethyl)phenyl]-5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate 2138267-47-5
methyl 5-hydroxy-1-methyl-4-(1-methyl-1H-pyrazol-4-yl)-1H-pyrazole-3-carboxylate 2137994-92-2
methyl 4-[4-(1-aminoethyl)phenyl]-5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate 2138519-47-6
1-{5-[(Butylamino)methyl]furan-2-yl}piperidine-4-carboxylic acid 2138519-59-0
ethyl 2-[4-(3,4-dimethoxyphenyl)-1H-1,2,3-triazol-1-yl]acetate 2138519-91-0
4-[4-(3,4-dimethoxyphenyl)-1H-1,2,3-triazol-1-yl]piperidine 2138250-36-7
ethyl 3-[4-(3,4-dimethoxyphenyl)-1H-1,2,3-triazol-1-yl]-2-hydroxypropanoate 2138250-37-8
Tert-butyl 4-[4-(2-methylpropyl)piperazin-1-yl]azepane-1-carboxylate 2137789-04-7
Tert-butyl 4-[4-(2-methoxyethyl)piperazin-1-yl]azepane-1-carboxylate 2137996-31-5
ethyl 2-[(4Z)-8-chloro-6-methyl-3,4-dihydro-2H-1-benzopyran-4-ylidene]acetate 2172632-08-3
4-(4-amino-1-methyl-1H-pyrazol-5-yl)-3-bromobenzamide 2137825-36-4
ethyl 2-[(5E)-8-methyl-2,3,4,5-tetrahydro-1-benzoxepin-5-ylidene]acetate 2172607-78-0
Ethyl 1-{1-oxaspiro[4.4]nonan-4-yl}piperidine-3-carboxylate 2138010-15-6
(1-{1-Oxaspiro[4.4]nonan-4-yl}piperidin-3-yl)methanol 2138380-37-5
Methyl 1-{1-oxaspiro[4.4]nonan-4-yl}piperidine-4-carboxylate 2138380-52-4
2-(Butan-2-yl)-3-hydrazinyl-5-methoxyquinoline 2137592-96-0
5-(2-Methylpropanesulfonyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid 2138268-39-8
5-(2-Methoxyethanesulfonyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid 2138010-76-9
4-(2-Bromoethenyl)-2,6-dimethoxyphenyl acetate 2138805-39-5
propan-2-yl 2-[4-(2-bromoethenyl)-3,5-dimethyl-1H-pyrazol-1-yl]acetate 2138808-37-2
(5S)-3-(but-3-en-2-yl)-5-tert-butyl-2-sulfanylideneimidazolidin-4-one 2166395-94-2

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