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-(2-Fluorophenyl)piperidin-3-ol 1239205-11-8
N-methyl-N-(2,2,2-trifluoroethyl)piperidine-3-carboxamide 1184429-01-3
Tert-butyl 3-(1,3-thiazol-5-yl)-2,5-dihydropyrrole-1-carboxylate 1239205-17-4
2-(6-chloro-3,4-dihydro-2H-1,4-benzoxazin-4-yl)acetic acid 1354962-23-4
2-methanesulfonyl-N-methylcyclopentan-1-amine 1343125-83-6
3-(4-Methyl-3-nitrophenyl)-1,3-oxazolidin-2-one 1354960-17-0
5-Methyl-1-phenylpyrrolidin-3-amine 1354962-45-0
2-(4-Bromothiophen-2-yl)-2-(dimethylamino)acetic acid 1248050-64-7
Tert-butyl 4-(4-ethoxyphenyl)-3-hydroxypiperidine-1-carboxylate 1354963-21-5
Tert-butyl 3-oxo-4-[3-(trifluoromethyl)phenyl]piperidine-1-carboxylate 1354951-38-4
Tert-butyl 4-(4-ethylphenyl)-3-hydroxypiperidine-1-carboxylate 1354957-71-3
Tert-butyl 4-(4-fluoro-2-methylphenyl)-3-hydroxypiperidine-1-carboxylate 1354951-72-6
Tert-butyl 3-amino-4-(4-fluoro-3-methylphenyl)piperidine-1-carboxylate 1354958-16-9
ethyl 4-((1E)-3-tert-butoxy-3-oxoprop-1-en-1-yl)benzoate 500344-18-3
8-(piperidin-1-ylsulfonyl)[1,2,4]triazolo[4,3-a]pyridine-3(2H)-thione 1291486-49-1
1-(3-Fluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid 1291486-99-1
1-(3,4-Difluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid 1291487-13-2
(3,5-dimethyl-1H-pyrazol-1-yl)(3-{[4-(3-methoxyphenyl)piperazin-1-yl]sulfonyl}thiophen-2-yl)methanone 1291487-00-7
(3-{[4-(2-chlorophenyl)piperazin-1-yl]sulfonyl}thiophen-2-yl)(3,5-dimethyl-1H-pyrazol-1-yl)methanone 1291487-01-8
3-{[(4-Bromophenyl)sulfonyl](methyl)amino}thiophene-2-carboxylic acid 1291486-57-1
3-ethyl-N-phenyl-[1,2,4]triazolo[4,3-a]pyridine-8-sulfonamide 1291487-06-3
N-(4-ethylphenyl)-[1,2,4]triazolo[4,3-a]pyridine-8-sulfonamide 1291486-69-5
(7-methyl-4,4-dioxido-1H-4,1,2-benzothiadiazin-3-yl)(morpholin-4-yl)methanone 1474055-37-2
azepan-1-yl(7-methyl-4,4-dioxido-1H-4,1,2-benzothiadiazin-3-yl)methanone 1474056-81-9
1-[4-(4-Hydroxy-1-butyn-1-yl)-3-methylphenyl]-2,5-pyrrolidinedione 1184200-71-2
4-[4-(4-fluorophenyl)piperazino]-4-oxo-N-(3-pyridyl)butanamide 1224128-73-7
1-(4-Phenylpiperazino)-4-[4-(2-pyridyl)piperazino]-1,4-butanedione 1232795-82-2
N-(4-fluorobenzyl)-2-[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1232776-79-2
propyl 4-(2-oxo-4-{[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]carbamoyl}pyrrolidin-1-yl)benzoate 1232802-82-2
2,5-dichloro-N-(2-methyl-1H-benzimidazol-5-yl)benzenesulfonamide 1232798-27-4
2-[acetyl(benzyl)amino]-N-(1H-indol-6-yl)-4-methyl-1,3-thiazole-5-carboxamide 1232693-54-7
2-[acetyl(tetrahydro-2-furanylmethyl)amino]-N-(1H-indol-5-yl)-4-methyl-1,3-thiazole-5-carboxamide 1224164-65-1
N-[3-(acetylamino)phenyl]-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxamide 1232793-37-1
Methyl 2-bromo-4-(bromomethyl)-5-chlorobenzoate 1313513-41-5
N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-2-[1-(1H-tetrazol-1-ylmethyl)cyclohexyl]acetamide 1246045-80-6
4-(8-Nitroquinolin-4-yloxy)phenylamine 1174997-03-5
5'-Iodo-2,2'-bithiophene-5-carbaldehyde 18494-77-4
3-Butyl-4,4-dimethylcyclohexan-1-one 109539-15-3
N-(3-methoxyphenyl)-2-([1,2,4]triazolo[4,3-b]pyridazin-6-ylsulfanyl)acetamide 1224166-39-5
2-(3-methoxyphenyl)-4-methyl-N-[(2E)-5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-1,3-thiazole-5-carboxamide 1232821-54-3
Ethyl 4-{[4-hydroxy-6-(trifluoromethoxy)quinolin-3-yl]carbonyl}piperazine-1-carboxylate 1224165-78-9
2-[(tetrahydrofuran-2-ylmethyl)amino]-N-(1,3-thiazol-2-yl)-1,3-thiazole-4-carboxamide 1232805-63-8
N-(5-butyl-1,3,4-thiadiazol-2-yl)-1-methyl-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carboxamide 1232825-21-6
1-[6-(3,4-Dichlorophenyl)-4-pyrimidinyl]-1,3-dihydro-2H-imidazol-2-one 1319157-21-5
1-[6-(3,4-Dichlorophenyl)-4-pyrimidinyl]-1,3-dihydro-3-methyl-2H-imidazol-2-one 1319157-23-7
N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]-5-oxo-1-phenylpyrrolidine-3-carboxamide 1232779-08-6
2-{2-[4-(4-chlorophenyl)piperazino]-2-oxoethyl}-6-(4-fluoro-2-methoxyphenyl)-3(2H)-pyridazinone 1232779-81-5
2-[3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2E)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide 1232819-92-9
N-cyclopentyl-2-[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1232797-38-4
2-[1-(1H-tetrazol-1-ylmethyl)cyclohexyl]-N-(1,3-thiazol-2-yl)acetamide 1232793-67-7

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