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-chlorobenzyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1H-pyrazol-5-ol 1282105-69-4
N~1~-(1,5-dimethylhexyl)-2-[3-(2-furyl)-6-oxo-1(6H)-pyridazinyl]acetamide 1282113-85-2
Thiophene-3-ol, 4-(3,4-dihydro-2(1H)-isoquinolinyl)tetrahydro-, 1,1-dioxide 1216225-53-4
N-[(2Z)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-3-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)propanamide 1282119-92-9
1-(5-Methoxyethoxy-pyridin-3-yl)-4-methyl-homopiperazine 223797-42-0
2-(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)-N-(4-phenylbutan-2-yl)acetamide 1282105-89-8
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(naphthalen-1-ylmethyl)-1H-pyrazol-5-ol 1282106-55-1
(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)(1-methyl-1H-indol-3-yl)methanone 1282098-34-3
4-Amino-2-chlorobenzene-1-sulfonyl chloride 1261619-24-2
4-[4-oxo-2-(propan-2-yl)-1,4-dihydroquinazolin-3(2H)-yl]-N-(1,3-thiazol-2-yl)butanamide 1282133-98-5
N-(6-methoxypyridin-3-yl)-2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)acetamide 1282100-90-6
2-(3-fluorophenyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide 1282130-11-3
N-(2-hydroxyphenyl)-3-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]propanamide 1282100-94-0
6-(2-chlorophenyl)-2-[2-oxo-2-(2-phenylmorpholin-4-yl)ethyl]pyridazin-3(2H)-one 1282110-03-5
N-(1H-indol-5-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide 1282106-93-7
2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-phenylbutan-2-yl)acetamide 1282101-56-7
N-(1H-indol-6-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide 1282115-76-7
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(thiophen-2-yl)pyridazin-3(2H)-one 1282123-69-6
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-phenylpyridazin-3(2H)-one 1282095-32-2
2-(2,3-dimethoxyphenyl)-N-(1H-indol-5-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide 1282115-77-8
(4-chloro-2-(1H-tetrazol-1-yl)phenyl)(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)methanone 1282121-78-1
3-(3,4-dimethoxyphenyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazol-5-ol 1282113-97-6
6-[4-(methylsulfanyl)phenyl]-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone 1282095-48-0
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one 1282117-72-9
1-{[3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid 1282140-41-3
2-(6-bromo-1H-indol-1-yl)-1-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)ethanone 1282121-90-7
methyl 5-(4-methoxyphenyl)-2-methyl-4-(2-oxo-2,3-dihydro-1H-indol-3-yl)-1H-pyrrole-3-carboxylate 1282121-92-9
2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]-N-(6-methoxypyridin-3-yl)acetamide 1282102-47-9
N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-5-oxo-1-phenylpyrrolidine-3-carboxamide 1282101-81-8
2-[2-oxo-2-(2-phenylmorpholino)ethyl]-5,6,7,8-tetrahydro-3(2H)-cinnolinone 1282126-08-2
N-(2-hydroxyphenyl)-2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]acetamide 1282110-18-2
2-(2,3-dimethoxyphenyl)-N-(1H-indol-6-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide 1282124-93-9
1-(4-bromophenyl)-N-(5-cyclobutyl-1,3,4-thiadiazol-2-yl)-5-oxopyrrolidine-3-carboxamide 1282132-65-3
N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide 1282129-41-2
1-({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)piperidine-3-carboxylic acid 1282127-69-8
Methyl 4-({[2-(4-methoxyphenyl)-1-methyl-5-oxopyrrolidin-3-yl]carbonyl}amino)benzoate 1282117-97-8
2-Cyano-4-fluorocinnamic acid 77532-96-8
N-[(2Z)-5-(2-methoxyphenyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide 1282103-11-0
1-benzyl-N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-1H-indole-3-carboxamide 1282100-99-5
1-{[3-(4-bromophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid 1282125-12-5
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide 1282110-67-1
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide 1282127-89-2
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(trifluoromethyl)-1H-pyrazol-5-ol 1282096-19-8
6-(4-bromophenyl)-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone 1282110-29-5
2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)-N-(1,3-thiazol-2-yl)acetamide 1282110-79-5
benzyl N-[(3-sulfamoylphenyl)methyl]carbamate 1871308-68-7
Benzyl 4-(2-chloroacetyl)piperazine-1-carboxylate 154615-77-7
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(2-phenylethyl)-1H-pyrazol-5-ol 1282119-22-5
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-[4-(propan-2-yl)benzyl]-1H-pyrazol-5-ol 1282130-55-5
1-(4-bromophenyl)-N-(1-methyl-1H-pyrazol-4-yl)-5-oxopyrrolidine-3-carboxamide 1282105-22-9

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