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
4-Bromo-2-(3-ethoxyphenyl)thiazole 1518866-99-3
2-chloro-7-cyclopentyl-N-methyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide 1211444-14-2
N-(oxetan-3-yl)azetidine-3-carboxamide 1526949-70-1
2,2-Difluoro-2-methanesulfonylacetic acid 1505023-53-9
1-(5-Chlorothiophen-2-yl)cyclopentan-1-amine 1368931-73-0
I(2)-Alanine, N-[cyano(3-methylphenyl)methyl]-N-ethyl-, ethyl ester 1784647-83-1
Methyl 4-(hydroxycarbamoyl)-2-aminobenzoate 1431320-17-0
N-hydroxy-4-(morpholin-4-yl)benzamide 1431320-37-4
tert-butyl 4-(4-bromo-1-(2-((methylsulfonyl)oxy)ethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate 1226803-02-6
Ethyl (5-fluoronaphthalen-1-yl)acetate 1055321-93-1
N,3,7-trihydroxynaphthalene-2-carboxamide 1431320-34-1
2-(1,3-Thiazol-5-yl)cyclopropane-1-carboxylic acid 1566343-09-6
3-Chloro-4-(2-chloropyridin-4-yloxy)benzenamine 1225278-52-3
2-Chloro-4-(2-chloro-5-fluoro-4-nitrophenoxy)pyridine 1225278-68-1
4-(2,3-Dihydroxy-propyl)-3,5-dimethyl-benzaldehyde 917873-33-7
1-But-3-enyl-4-cyclohexyl-benzene 1058159-99-1
Methyl 3-[(tert-butylthio)diazenyl]-4-fluoro-2-methylbenzoate 1079991-70-0
4-Methyl-2-{[(2-methylpiperidine-1-carbonyl)amino]methyl}pentanoic acid 1502185-72-9
2-Hydroxy-3-(4-methyl-1,3-thiazol-2-yl)propanoic acid 1510044-84-4
2-[2-(Piperazin-1-yl)ethyl]pyrimidine 1368595-46-3
1,3-DI-Tert-butyl 5-bromo-2-oxo-2,3-dihydro-1H-1,3-benzodiazole-1,3-dicarboxylate 1581274-99-8
P789X65Vwc 1639397-97-9
2-Methyl-6-phenylhex-5-en-2-amine 1613582-45-8
5,6-Dimethylthiazolo[2,3-c][1,2,4]triazole-3-carboxylic acid 1280636-87-4
4-Fluoro-2-hydrazinylphenol 1804154-17-3
Sodium but-3-ene-1-sulfonate 60154-88-3
6,7-Dihydro-5H-cyclopenta[4,5]thiazolo[2,3-c][1,2,4]triazole-3-carboxylic acid 1283707-46-9
Methyl 2-(prop-2-yn-1-yl)benzoate 2167438-84-6
5,6,7,8-Tetrahydrobenzo[4,5]thiazolo[2,3-c][1,2,4]triazole-3-carboxylic acid 1282985-36-7
4-[(Hydrazinylcarbonyl)amino]benzoic acid methyl ester 1368949-09-0
1,3-Benzenediamine, N1-cyclopropyl-5-nitro-N1,N3-dipropyl- 1512734-08-5
1-(2-Aminoethyl)-5-fluoro-1,2-dihydropyridin-2-one 1267095-45-3
2-(4-Fluorophenyl)-3-methyl-2,7-naphthyridine-1,8(2H,7H)-dione 1426957-22-3
3-Amino-2-(1,3-dioxaindan-5-yl)-2-methylpropan-1-ol 1368831-49-5
Phosphonothious acid, cyclohexyl-, O-ethyl S-phenyl ester 62662-75-3
5-Fluoro-2-(trifluoromethylsulphonyl)aniline 1532769-02-0
Thiazolo[2,3-c]-1,2,4-triazole-3-carboxylic acid, 5-(3-methoxyphenyl)- 1281335-11-2
4-Amino-2-chloro-5-(3-hydroxyprop-1-yn-1-yl)benzonitrile 1426566-00-8
1-(4-tert-butoxyphenyl)propan-1-amine 157981-65-2
4-Chloro-3'-methoxy-biphenyl-2-ylamine 1499489-79-0
1-(5-Methylpyrimidin-2-yl)propan-1-one 1554525-62-0
3-(4-Methoxyphenyl)-5-methylaniline 408312-76-5
(R)-Benzyl (1-amino-3-hydroxy-1-oxopropan-2-yl)carbamate 2382234-57-1
3-Acetamido-4-propoxybenzoic acid 1789664-30-7
(2R)-2-[[(1R)-1-(2-Bromo-4-methoxyphenyl)ethoxy]methyl]oxirane 1232403-72-3
2-Amino-6-[(but-3-yn-1-yl)amino]-3-fluorobenzoic acid 1545958-35-7
1-Chloro-8-fluoronaphthalene 314-45-4
Rel-(2S,3R)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol 76673-44-4
Tert-butyl 3-ethyl-3-methoxypiperidine-1-carboxylate 1546296-31-4
(S)-2-((6-(3-Aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)-4-fluorobenzonitrile 2206135-35-3

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