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
2-(Butan-2-yl)-2-methylcyclohexane-1,3-dione 2137721-42-5
3-Amino-2-methyl-2-(pyrazin-2-yl)propan-1-ol 2228260-25-9
5-(1-methoxyethyl)-1-(3-methoxypropyl)-1H-1,2,3-triazole-4-carboxamide 2172053-09-5
1-[5-(2-Hydroxyethyl)-4-methyl-1,3-thiazol-2-yl]pentan-1-one 2167523-45-5
(1R,4S,5S)-5-acetamidobicyclo[2.1.0]pentane-5-carboxylic acid 2763886-09-3
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide 2877644-86-3
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-{3-[(pyrazin-2-yloxy)methyl]pyrrolidin-1-yl}acetamide 2877664-49-6
3,3-Difluorobutanethioamide 2228422-60-2
5-chloro-2-ethoxy-N,N-bis(2-methylpropyl)benzene-1-sulfonamide 2870919-51-8
N-(3-fluoro-4-methylphenyl)-2-{4-[(5-fluoropyridin-3-yl)methyl]piperazin-1-yl}acetamide 2877666-46-9
N-(3-fluoro-4-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide 2877688-29-2
2-{3-[(4-bromo-1H-pyrazol-1-yl)methyl]azetidin-1-yl}-3-methyl-3H,4H-thieno[3,2-d]pyrimidin-4-one 2877674-63-8
6-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole 2877659-07-7
5-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole 2877702-58-2
N-(3-methoxyphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide 2877659-35-1
5-Bromo-3-chloro-2-(3-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}azetidin-1-yl)pyridine 2877751-39-6
2-methoxy-N,N-bis(2-methylpropyl)-5-(propan-2-yl)benzene-1-sulfonamide 2870958-59-9
N-(3-chloro-2-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide 2877675-94-8
3-{4-[6-(3-methyl-1H-pyrazol-1-yl)pyrimidin-4-yl]piperazin-1-yl}pyrazine-2-carbonitrile 2877691-06-8
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(4-methanesulfonamidopiperidin-1-yl)acetamide 2877645-32-2
1-tert-butyl-4-(pyrrolidin-3-yloxy)-1H-pyrazole 2228273-72-9
N-(4-ethylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide 2877708-24-0
9H-Xanthene-9-carboxylic acid, 2-[[(1-methylethyl)amino]thioxomethyl]hydrazide 87836-46-2
2-(4-{[(3-chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)acetamide 2877691-12-6
2-{[(Tert-butoxy)carbonyl]amino}-5-chloro-6-methylpyridine-3-carboxylic acid 2580223-36-3
6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2,4-triazine-5-carboxylic acid 2580240-57-7
3-(7-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione hydrochloride 2839138-80-4
rac-(3'aR,6'aR)-hexahydrospiro[azetidine-3,1'-furo[3,4-c]pyrrole]-3'a-carboxylic acid 2580093-26-9
2,5-Diazaspiro[3.5]nonane-7-carboxylic acid 2580208-56-4
Methyl 2,5-diazaspiro[3.5]nonane-7-carboxylate 2580239-94-5
3a-amino-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-2,2-dione 2580239-83-2
5-{[(Benzyloxy)carbonyl]amino}-2-methoxybenzoic acid 2352669-23-7
rac-(2R,5R)-1-[(benzyloxy)carbonyl]-5-(4-chlorophenyl)pyrrolidine-2-carboxylic acid 2345677-79-2
8-({[(Benzyloxy)carbonyl]amino}methyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic acid 2580225-09-6
4-bromo-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,3-benzodiazole-6-carboxylic acid 2383963-53-7
2-[4-(6-{4-[2-(Methylsulfanyl)pyrimidin-4-yl]piperazin-1-yl}pyridazin-3-yl)piperazin-1-yl]ethan-1-ol 2877718-84-6
4-(1-{[(9H-fluoren-9-yl)methoxy]carbonyl}azetidin-3-yl)butanoic acid 2293364-66-4
2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylic acid 2580236-91-3
3-(Benzyloxy)-2-{[(tert-butoxy)carbonyl]amino}benzoic acid 2580248-85-5
2-[6-Oxo-4-(propan-2-yl)-1,6-dihydropyrimidin-1-yl]ethane-1-sulfonamide 2580248-93-5
{6,6-Dimethylspiro[3.3]heptan-2-yl}methanesulfonamide 2580248-98-0
Tert-butyl 4-cyano-4-(sulfamoylmethyl)piperidine-1-carboxylate 2580225-19-8
Spiro[bicyclo[2.2.1]heptane-7,1'-cyclopropan]-2-ene-6-sulfonamide 2580188-92-5
N-[(2-chlorophenyl)methyl]-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide 2877642-93-6
Tert-butyl 5-sulfamoyl-2-azaspiro[3.3]heptane-2-carboxylate 2580225-23-4
Benzyl 1-(sulfamoylmethyl)-7-azabicyclo[2.2.1]heptane-7-carboxylate 2580225-27-8
2-(3,4-dihydro-2H-1,4-benzoxazin-4-yl)ethane-1-sulfonamide 2580236-98-0
2-{1,3-dioxo-hexahydro-1H-pyrrolo[1,2-c]imidazolidin-2-yl}ethane-1-sulfonamide 2580178-21-6
3-(2-{[(Tert-butoxy)carbonyl]amino}-1-hydroxypropan-2-yl)benzoic acid 2580237-03-0
Ethyl 4-fluoro-2-azabicyclo[2.1.1]hexane-1-carboxylate 2580199-81-9

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