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
(1R,2S)-2-(1-Methylpiperidin-4-yl)cyclopropan-1-amine 1903840-47-0
1-[1-[(2-Methylpropan-2-yl)oxycarbonyl]piperidin-2-yl]cyclobutane-1-carboxylic acid 2229174-20-1
1-(5-Bromopyrimidin-2-yl)-2-fluoroethanol 2228148-11-4
(3S,6R)-4-(((9H-fluoren-9-yl)methoxy)carbonyl)-6-methylmorpholine-3-carboxylic acid 2381318-90-5
3-[(1R,3S)-3-{[(tert-butoxy)carbonyl]amino}-2,2-dimethylcyclobutyl]propanoic acid 2287238-17-7
2-[(3R,5S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-5-methoxycarbonylpyrrolidin-3-yl]acetic acid 2375248-85-2
2-Bromo-N-(cyclopropylmethyl)-4-nitrobenzamide 2809954-95-6
4-Amino-2-bromo-N-(2,2-difluoroethyl)benzamide 2814656-90-9
2-Bromo-4-nitro-N-(2,2,2-trifluoroethyl)benzamide 2819315-76-7
Ethyl 5-cyano-4-methyl-1H-pyrazole-3-carboxylate 829-06-1
5-Chloro-3-iodo-1-tetrahydropyran-2-yl-pyrazolo[4,3-d]pyrimidine 2581225-72-9
Methyl 5-formyl-4-methoxy-3-methylpicolinate 2581222-16-2
5-Fluoro-4-methylsulfanylpyridin-3-amine 2445791-42-2
2-[2,3,5,6-Tetramethyl-4-(1-oxobutyl)phenoxy]acetic acid 1225-21-4
2-((Difluoromethoxy)methyl)thiazole 2448420-31-1
1-(3-Bicyclo[4.1.0]heptanyl)-2-chloroethanone 2008278-62-2
1-[5-(4,6-dichloro-2-pyrimidinyl)-2-methyl-1-piperidinyl]Ethanone 2445862-19-9
Methyl (2R)-2-aminohex-5-ynoate;hydrochloride 2460739-83-5
3-Bromo-6-chloro-5-(4-chlorophenyl)pyrazin-2-amine 2819691-32-0
Methyl 4-bromo-2-(cyclopropylmethoxy)-6-fluorobenzoate 2814331-23-0
(R)-tert-butyl (1-(4-cyanopiperidin-1-yl)-1-oxobutan-2-yl)carbamate 2801954-82-3
(R)-2,5-dioxopyrrolidin-1-yl 3-((tert-butoxycarbonyl)amino)butanoate 2819315-40-5
1-(3-Fluorobenzyl)azetidine-3-carbonitrile 2814656-74-9
1-(2-Fluorobenzyl)azetidine-3-carbonitrile 2819315-48-3
Methyl 1,2-diazaspiro[2.5]oct-1-ene-6-carboxylate 36908-75-5
1-Chloro-2-(cyclopropylmethoxy)-3-ethynylbenzene 2805157-15-5
Methyl 3-(benzyloxy)-4-ethynylbenzoate 2816625-60-0
(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-guanidinophenyl)propanoic acid 351518-30-4
3-((2-Cyclobutylethyl)amino)thietane 1,1-dioxide 1866288-07-4
Methyl 2-(4-chlorophenyl)-4-oxazoleacetate 22091-50-5
Methyl 4-(1-methylcyclobutyl)benzoate 2386821-92-5
2-Chloro-3-fluoro-5-oxo-5H-benzo[4,5]thiazolo[3,2-a][1,8]naphthyridine-6-carboxylic acid 105686-25-7
tert-Butyl (6-(fluorosulfonyl)hexyl)carbamate 2167975-43-9
1,4,5,8,9,12,13,16-Octabromo-2,3,6,7,10,11,14,15-octamethoxytetraphenylene 1675269-07-4
N1-(Pyridin-4-ylmethyl)-N2,N2-bis(2-((pyridin-4-ylmethyl)amino)ethyl)ethane-1,2-diamine 1370518-24-3
tert-Butyl (5-iodoisoxazol-3-yl)carbamate 2386780-38-5
3-((2-(Cyclopent-1-en-1-yl)ethyl)amino)thietane 1,1-dioxide 1882745-58-5
tert-Butyl (3-(fluorosulfonyl)propyl)(methyl)carbamate 2168738-80-3
6-(Aminomethyl)-6-hydroxy-2-thiaspiro[3.3]heptane 2,2-dioxide 2303848-27-1
(2R)-2-Amino-3-((1-(6-nitrobenzo[d][1,3]dioxol-5-yl)ethyl)thio)propanoic acid 1551078-43-3
(2S,2a'S,4'S,6a'S,6b'S,8a'S,8b'R,11a'S,12a'S,12b'R)-4'-Amino-6a',8a'-dimethylhexadecahydro-3H-spiro[furan-2,9'-naphtho[2',1':4,5]indeno[2,1-b]furan]-5,10'(2'H,4H)-dione 1042138-30-6
tert-Butyl 3-(sulfamoylmethyl)azetidine-1-carboxylate 2172271-34-8
(8-Aminotricyclo[3.2.1.02,7]octan-1-yl)methanol 2649061-04-9
3-(2-((Tetrahydrofuran-3-yl)amino)ethyl)thietane 1,1-dioxide 1881136-06-6
tert-Butyl (5-cyanobicyclo[3.1.1]heptan-1-yl)carbamate 2375193-02-3
4-[[Boc[3-(Boc-amino)propyl]amino]methyl]-2-pyrrolidinone 2838324-52-8
4-(5-Hydroxypyrimidin-2-yl)tetrahydro-2H-thiopyran 1,1-dioxide 2169438-99-5
tert-Butyl (tert-butoxycarbonyl)(4-chloro-5-cyanopyridin-2-yl)carbamate 2227205-55-0
tert-Butyl (4-(fluorosulfonyl)butyl)carbamate 2167546-48-5
3-(2-((tert-Butoxycarbonyl)amino)ethyl)cyclobutanecarboxylic acid 2352790-29-3

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