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
3-Methyl-6-({1-[2-(trifluoromethyl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine 2770615-87-5
Tert-butyl 4-[6-oxo-1-(propan-2-yl)-1,6-dihydropyridazin-3-yl]piperazine-1-carboxylate 2770616-59-4
3-{[1-(4-Methoxy-3-methylbenzenesulfonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine 2770621-54-8
3-Tert-butyl-8-(6-ethyl-5-fluoropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770631-76-8
3-tert-butyl-8-[2-(2H-1,2,3-triazol-2-yl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770584-20-6
N-(2-methoxyphenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide 2770607-27-5
3-Tert-butyl-8-(5,6,7,8-tetrahydroquinazolin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770607-10-6
1-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-4-[3-(trifluoromethyl)phenyl]piperazine 2326287-71-0
N-(2-chlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide 2770600-90-1
N-(4-chloro-2-fluorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide 2770596-50-2
1-(2-Chlorophenyl)-4-{5-methylpyrazolo[1,5-a]pyrimidin-7-yl}piperazine 2326517-76-2
N-(4-bromophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide 2770594-98-2
N1,N1-dimethyl-N4-[(4-methylthiophen-2-yl)methyl]benzene-1,4-diamine 2770591-25-6
3-tert-butyl-8-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770632-95-4
1-({4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}methyl)cyclobutan-1-ol 2770630-56-1
N-(3,4-dichlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide 2770581-24-1
2-{4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}cyclohexan-1-ol 2770626-64-5
3-methyl-2-[(3-methylbut-2-en-1-yl)sulfanyl]-3H,4H-thieno[3,2-d]pyrimidin-4-one 2770633-00-4
3-Methyl-6-({1-[4-(2-methyl-1,3-oxazol-4-yl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine 2770628-67-4
4-[4-(4-Methoxyphenyl)piperazin-1-yl]-2-methyl-6-(trifluoromethyl)pyrimidine 2329729-90-8
1-({4H,5H,6H-cyclopenta[d][1,3]thiazol-2-yl}methyl)-4-(4-methoxyphenyl)piperazine 2326412-68-2
3-Tert-butyl-8-(1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770586-52-0
1-(4-bromo-2,5-dimethoxybenzenesulfonyl)-5-chloro-1H-1,2,3-benzotriazole 2770589-45-0
3-Tert-butyl-8-[(5-cyclopropyl-1,3,4-oxadiazol-2-yl)methyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770627-75-1
3-(2,2-Difluoroethyl)-8-(5-nitropyrimidin-2-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770627-52-4
1-(Morpholin-4-yl)-2-{4-[6-(pyrimidin-5-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}ethan-1-one 2770626-10-1
8-[(3-Methyl-1,2-oxazol-5-yl)methyl]-3-phenyl-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione 2770640-34-9
3-(4-{2,3-Dimethylimidazo[1,2-b]pyridazine-6-carbonyl}piperazin-1-yl)-1,2-benzothiazole 2770633-25-3
1-[(4-fluorophenyl)methyl]-N-[2-(methylsulfanyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-3-yl]-5-oxopyrrolidine-3-carboxamide 2770633-83-3
N-[(2-chloro-4-methylphenyl)methyl]-4-[(trifluoromethyl)sulfanyl]aniline 2327674-08-6
2-[3-(1-benzyl-5-oxopyrrolidin-3-yl)-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-4-yl]-N-(cyclohexylmethyl)acetamide 2770594-45-9
N'-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]ethanediamide 2770635-52-2
5-Chloro-2-[5-(oxolane-3-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770602-61-2
5-Chloro-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770641-39-7
5-Fluoro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770581-80-9
2-[5-(2,2-Dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-5-fluoropyridine 2770606-86-3
5-Chloro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770599-88-5
2-[3-cyclopropyl-6-fluoro-2,4-dioxo-7-(piperidin-1-yl)-1,2,3,4-tetrahydroquinazolin-1-yl]-N,N-dipropylacetamide 2770634-17-6
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-2,2-dimethylpropanamide 2770605-23-5
methyl N-{4-[(1,3,4-thiadiazol-2-yl)sulfamoyl]phenyl}carbamate 2327679-84-3
methyl N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]carbamate 2770586-86-0
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-3,3-dimethylbutanamide 2770597-51-6
4,4,4-Trifluoro-1-[5-(5-fluoropyridin-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]butan-1-one 2770632-29-4
5-Bromo-2-[5-(oxane-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770630-91-4
5-Chloro-2-[5-(2,2-dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770599-78-3
5-Bromo-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770631-06-4
3-Chloro-2-{[1-(3,3-difluorocyclobutanecarbonyl)piperidin-3-yl]methoxy}pyridine 2770617-04-2
5-Bromo-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine 2770634-64-3
N-(adamantan-1-yl)-2-bromo-4,5-dichlorobenzene-1-sulfonamide 2770609-57-7
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-1,3,5-trimethyl-1H-pyrazole-4-carboxamide 2770590-41-3

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