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-cyclopropyl-N-(4-methylpyridin-3-yl)-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549000-12-4
2-(4-chlorophenyl)-1-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}ethan-1-one 2548977-93-9
1-{[1-(3-fluoro-4-methoxybenzoyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549045-78-3
2-(2,4-difluorophenyl)-1-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}ethan-1-one 2549054-19-3
2-[1-(3-Chlorobenzoyl)-octahydropyrrolo[3,4-b]pyrrol-5-yl]pyridine 2549007-05-6
5-Fluoro-2-{[1-(3,3,3-trifluoropropanesulfonyl)pyrrolidin-3-yl]methoxy}pyridine 2548981-31-1
5-Methoxy-2-({1-[2-(trifluoromethyl)pyridine-4-carbonyl]piperidin-4-yl}oxy)pyrimidine 2549006-94-0
N-[(4-hydroxy-4,5,6,7-tetrahydro-1-benzothiophen-4-yl)methyl]-3-[4-(trifluoromethyl)phenyl]propanamide 2549007-26-1
2-(2-Methoxyphenyl)-1-[5-(pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrol-1-yl]ethan-1-one 2548995-35-1
1-{[1-(2,3-dihydro-1,4-benzodioxine-5-carbonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2548985-59-5
1-{4-[(5-methoxypyrimidin-2-yl)oxy]piperidin-1-yl}-2-(1H-1,2,4-triazol-1-yl)ethan-1-one 2549045-85-2
3-[2-Oxo-2-(4-{[5-(pyridin-4-yl)pyrimidin-2-yl]oxy}piperidin-1-yl)ethyl]-1,3-oxazolidin-2-one 2549056-78-0
N-[(4-hydroxy-4,5,6,7-tetrahydro-1-benzothiophen-4-yl)methyl]-1-methanesulfonylpiperidine-4-carboxamide 2548988-90-3
2-(2-bromo-4-fluorophenyl)-1-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}ethan-1-one 2548989-31-5
1-[5-(Pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrol-1-yl]-2-[3-(trifluoromethyl)phenyl]ethan-1-one 2549054-52-4
N-(2-chlorophenyl)-5-(pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carboxamide 2549062-64-6
N-(4-fluorophenyl)-3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidine-1-carboxamide 2549010-58-2
1,3,5-trimethyl-4-({3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}sulfonyl)-1H-pyrazole 2549021-87-4
4-methyl-1-({1-[4-(propan-2-yloxy)benzoyl]azetidin-3-yl}methyl)-1H-pyrazole 2549010-85-5
7-Methoxy-3-{[1-(oxane-2-carbonyl)piperidin-4-yl]methyl}-3,4-dihydroquinazolin-4-one 2549051-30-9
1-(3,4-dimethylphenyl)-4-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidine-1-carbonyl}pyrrolidin-2-one 2549037-15-0
2-(2,4-dichlorophenoxy)-1-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}ethan-1-one 2549019-65-8
1-{[1-(2-bromo-5-methoxybenzoyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549019-89-6
7-Methoxy-3-{[1-(4,4,4-trifluorobutanoyl)piperidin-4-yl]methyl}-3,4-dihydroquinazolin-4-one 2548999-76-2
N-[(4-fluorophenyl)methyl]-5-(pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carboxamide 2549047-83-6
3-cyclopropyl-N-[2-(trifluoromethyl)phenyl]-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549039-47-4
1-(4-methoxyphenyl)-4-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidine-1-carbonyl}pyrrolidin-2-one 2549029-07-2
3-cyclopropyl-N-(3,4-difluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2548998-80-5
N-[(4-chlorophenyl)methyl]-4-(1,2,5-thiadiazol-3-yl)piperazine-1-carboxamide 2548978-45-4
N-(4-bromo-2-methylphenyl)-3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549032-37-1
N-(2-methyl-1,3-benzothiazol-5-yl)-5H,7H,8H-pyrano[4,3-c]pyridazine-3-carboxamide 2549025-22-9
2-({1-[1-(4-Fluorophenyl)cyclopropanecarbonyl]piperidin-4-yl}oxy)-5-methoxypyrimidine 2549064-06-2
3-cyclopropyl-N-[2-(4-fluorophenyl)ethyl]-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549034-12-8
2-{[1-(2,3-Dihydro-1,4-benzodioxine-5-carbonyl)piperidin-4-yl]oxy}-5-methoxypyrimidine 2549028-45-5
4-({1-[(5-Methylthiophen-2-yl)sulfonyl]azetidin-3-yl}oxy)pyridine-2-carboxamide 2548978-65-8
3-cyclopropyl-N-(4-methoxy-2-methylphenyl)-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549052-41-5
4-(4-{4-[(5-Methoxypyrimidin-2-yl)oxy]piperidine-1-carbonyl}phenyl)morpholine 2548978-89-6
4-ethoxy-3-fluoro-N-[(4-hydroxy-4,5,6,7-tetrahydro-1-benzothiophen-4-yl)methyl]benzene-1-sulfonamide 2549028-65-9
4-({1-[(1,3,5-trimethyl-1H-pyrazol-4-yl)sulfonyl]azetidin-3-yl}oxy)pyridine-2-carboxamide 2549006-21-3
1-{[1-(3-methoxybenzenesulfonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549012-43-1
1-(2-{4-[(7-Methoxy-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}-2-oxoethyl)pyrrolidine-2,5-dione 2549049-40-1
1-{[1-(4-fluoro-3-methylbenzenesulfonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549004-77-3
1-{[1-(2-methoxy-5-methylbenzenesulfonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549012-38-4
1-{[1-(4-tert-butylbenzenesulfonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2549012-73-7
3-cyclopropyl-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-[1,2,4]triazolo[4,3-b]pyridazine-6-carboxamide 2549027-91-8
2-[1-(3-Chloro-2-methylbenzenesulfonyl)-octahydropyrrolo[2,3-c]pyrrol-5-yl]pyridine 2549015-66-7
4-{[1-(2-Fluorobenzenesulfonyl)azetidin-3-yl]oxy}pyridine-2-carboxamide 2548978-78-3
1-{[1-(3-chloro-4-methoxybenzenesulfonyl)azetidin-3-yl]methyl}-4-methyl-1H-pyrazole 2548978-81-8
3-(1H-indol-3-yl)-1-{3-[(4-methyl-1H-pyrazol-1-yl)methyl]azetidin-1-yl}propan-1-one 2548977-96-2
1-{3-[(1H-imidazol-1-yl)methyl]azetidin-1-yl}-3-(1H-indol-3-yl)propan-1-one 2548989-37-1

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