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
5-bromo-6-(cyclobutyloxy)-2H-Pyrazolo[3,4-b]pyridine 2573151-79-6
1,1-Dimethylethyl 7-(2-aminoethyl)-2-azaspiro[3.5]nonane-2-carboxylate 2573309-74-5
5-Chloro-3,3-dimethyl-4-oxopentanenitrile 2573212-68-5
2-Bromo-1-{1-methyl-2-oxabicyclo[2.2.2]octan-4-yl}ethan-1-one 2573214-04-5
Methyl 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]cyclopentanecarboxylate 2109762-21-0
8-iodo-6-methyl-5-Quinolinecarboxylic acid 2583685-28-1
(6-(2,4-Dimethyl-1H-imidazol-1-yl)-5-methylpyridazin-3-yl)methanamine hydrochloride 2130998-79-5
3-Bromo-5-(cyclopropylmethyl)pyridine 2412764-80-6
[(4,4-Difluorocyclohexyl)methyl](pentan-3-yl)amine 1873646-84-4
1-Cyclopentyl-1-methylpropyl 2-propenoate 1979169-28-2
2-Tert-butylimidazo[1,2-b]pyridazine-6-carboxylic acid hydrochloride 2548990-17-4
2-(Azetidin-3-yl)-6-(3-fluorophenyl)-2,3-dihydropyridazin-3-one hydrochloride 2549038-96-0
1-[5-(1,3-Thiazol-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-2-[4-(trifluoromethyl)phenyl]ethan-1-one 2548998-41-8
3-[4-(2,6-Dimethylpyrimidin-4-yl)piperazin-1-yl]-1,2-benzothiazole 2329358-65-6
3-[4-(5-Chloropyrimidin-2-yl)piperazin-1-yl]-1,2-benzothiazole 2324677-24-7
2-Phenoxy-1-(5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrol-2-yl)ethan-1-one 2640946-98-9
N-[2-(4-acetamido-3-iodophenyl)ethyl]acetamide 2549033-63-6
N-methyl-1,2-dihydroacenaphthylen-1-amine hydrochloride 5668-68-8
1-Methyl-3-(4-methylbenzoyl)-1,4-dihydroquinolin-4-one 2640977-33-7
4-[5-(Pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]pyrimidine 2549015-83-8
2-Methyl-6-{5-[5-(trifluoromethyl)pyridin-2-yl]-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl}-2,3-dihydropyridazin-3-one 2549025-36-5
2-({1-[(3,5-Dimethyl-1,2-oxazol-4-yl)sulfonyl]pyrrolidin-3-yl}methoxy)-6-(trifluoromethyl)pyridine 2548976-66-3
3-[2-(4-{[(3-Chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-2-oxoethyl]-2,3-dihydro-1,3-benzoxazol-2-one 2640888-60-2
3-{2-Oxo-2-[3-({[6-(trifluoromethyl)pyridin-2-yl]oxy}methyl)pyrrolidin-1-yl]ethyl}-2,3-dihydro-1,3-benzoxazol-2-one 2548992-49-8
2-(4-Acetylphenyl)-4-[(3-fluorophenyl)methyl]-1,1-dioxo-1lambda6,2,4-benzothiadiazin-3-one 2640835-02-3
(1-((3-Fluoroazetidin-1-yl)methyl)cyclopropyl)methanol 2603432-87-5
1-Amino-4-(trimethylsilyl)-3-butyn-2-ol 2161597-85-7
4-Bromo-2-chloro-9-phenyl-9H-carbazole 2440193-72-4
(R)-4-(3,5-Bis-trifluoromethyl-phenyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-butyric acid 1260613-44-2
(R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-4-naphthalen-2-YL-butyric acid 1260587-09-4
Benzyl 3-benzyl-6-(cyanomethylene)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate 2621937-19-5
(5-Bromo-3-chloropyridin-2-yl)(cyclopropyl)methanone 2661483-39-0
7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2,2-dimethylhexahydro-3H-pyrrolizin-3-one 2621934-81-2
4-[4-Methyl-1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-imidazol-5-yl]benzenamine 2550626-55-4
1-(2-(Benzyloxy)ethyl)-2-(trifluoromethyl)-1H-imidazole 2621933-75-1
2-Chloro-3-methoxy-1-(methoxymethoxy)naphthalene 2621937-11-7
rel-(2R,7aS)-7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2-methylhexahydro-3H-pyrrolizin-3-one 2621934-78-7
Ethyl 2-(3-bromoisoxazol-5-yl)-3-methylbutanoate 2724270-76-0
Ethyl rel-4-((1S,4S,6R)-1-((tert-butoxycarbonyl)amino)-3-oxabicyclo[4.2.0]octan-4-yl)benzoate 2216747-19-0
(10R,13S)-3-hydroxy-10,13-dimethyl-3,4,5,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one 19671-47-7
3-Chloro-5-(2-ethoxyethoxy)aniline 2817265-32-8
3-Chloro-5-isobutoxyaniline 2802575-20-6
4-(5-Methoxypyridin-2-yl)phenol 1609015-95-3
(1,2,3,4-Tetrahydropyridin-4-yl)methanol hydrochloride 2387596-57-6
tert-Butyl (2R,5R)-2-(bromomethyl)-5-methylmorpholine-4-carboxylate 2440199-04-0
2,2-Dimethyl-3-{methyl[(prop-2-en-1-yloxy)carbonyl]amino}propanoic acid 2680739-48-2
N-[[2,5-Dimethyl-1-(8-quinolinyl)-1H-pyrrol-3-yl]methyl]-4-piperidinemethanamine 33025-35-3
2-(2,2,2-Trifluoroacetamido)pyrimidine-4-carboxylic acid 2680899-89-0
Poly(oxy-1,2-ethanediyl), I+/--(4-carboxy-1-oxobutyl)-I-methoxy- 79934-70-6
Methyl 4-bromo-2-chloro-5-(trifluoromethyl)benzoate 2167951-05-3

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