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-chloro-5-fluoro-N-[(oxolan-2-yl)methyl]benzamide 2322064-80-0
4-(3-Chloro-5-fluorobenzoyl)piperazin-2-one 2329286-22-6
1-{4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidin-1-yl}-2,2-dimethylpropan-1-one 2549047-63-2
4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(oxolane-3-carbonyl)piperidine 2549033-34-1
4-[(5-Methyl-1,2-oxazol-4-yl)methyl]-2-(pyrrolidine-1-carbonyl)morpholine 2640844-04-6
4-[({2,3-dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-N-(prop-2-en-1-yl)piperidine-1-carboxamide 2549033-99-8
N-tert-butyl-3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine-1-carboxamide 2549038-87-9
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(3,3-difluorocyclobutanecarbonyl)pyrrolidine 2549021-74-9
4-[({2,3-dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-N-[(oxolan-2-yl)methyl]piperidine-1-carboxamide 2549048-91-9
4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(2-methylpropanesulfonyl)piperidine 2548979-13-9
tert-butyl 3-[(4-chloro-1H-pyrazol-1-yl)methyl]azetidine-1-carboxylate 2549050-20-4
1-(2-fluorophenyl)-N-[(5-methyl-1,3,4-oxadiazol-2-yl)methyl]methanesulfonamide 2326305-00-2
2-{4-[({2-Methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidine-1-carbonyl}pyridine 2548979-09-3
6,7-Dimethoxy-2-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-1,2,3,4-tetrahydroisoquinoline 2322169-24-2
4-[({2,3-dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(1H-pyrazole-4-carbonyl)piperidine 2549042-63-7
3-Bromo-5-{4-[({2,3-dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidine-1-carbonyl}pyridine 2549019-87-4
Tert-butyl 4-[(2,5-difluorophenyl)methyl]-3-oxopiperazine-1-carboxylate 2549044-65-5
Tert-butyl 4-(5-ethyl-6-methylpyrimidin-4-yl)piperazine-1-carboxylate 2548982-29-0
2-(3,5-Dimethyl-1,2-oxazol-4-yl)-1-{5-[3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}ethan-1-one 2548989-05-3
N-(3-tert-butyl-1,2-oxazol-5-yl)-4-ethyl-2,3-dioxopiperazine-1-carboxamide 2324591-24-2
3-({4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidin-1-yl}sulfonyl)pyridine 2548984-30-9
2-(4-cyclopropyl-6-oxo-1,6-dihydropyrimidin-1-yl)-N-(4-methyl-1,2,5-oxadiazol-3-yl)acetamide 2329416-08-0
4-{3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine-1-carbonyl}-3-fluoropyridine 2549003-07-6
3-{3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine-1-carbonyl}-5-fluoropyridine 2549027-59-8
N-(4,5-dimethyl-1,3-thiazol-2-yl)-2-(4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl)acetamide 2327372-93-8
2-[(2-Fluorophenyl)methanesulfonyl]-5-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrole 2549004-92-2
4-{3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine-1-carbonyl}-1-methyl-1H-pyrazole 2549012-30-6
3-Phenyl-6-{[1-(pyridine-3-sulfonyl)pyrrolidin-3-yl]methoxy}pyridazine 2548994-31-4
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(2-fluorobenzoyl)pyrrolidine 2549034-68-4
4-({3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidin-1-yl}sulfonyl)morpholine 2548996-68-3
4-{3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine-1-carbonyl}benzonitrile 2548986-28-1
2-({3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidin-1-yl}sulfonyl)-1-methyl-1H-imidazole 2549004-85-3
4-({3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidin-1-yl}sulfonyl)-1H-imidazole 2549005-13-0
4-({3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidin-1-yl}sulfonyl)-3,5-dimethyl-1,2-oxazole 2549006-00-8
6-{4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidine-1-carbonyl}quinoline 2549021-77-2
4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(5-fluoro-2-methoxybenzenesulfonyl)piperidine 2548975-56-8
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(2-fluorobenzenesulfonyl)pyrrolidine 2549003-19-0
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(4-methylbenzenesulfonyl)pyrrolidine 2549021-96-5
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(4-fluorobenzenesulfonyl)pyrrolidine 2548997-08-4
1-(2-Chlorobenzenesulfonyl)-3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine 2549056-65-5
3-[({3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]-1-(4-fluoro-2-methylbenzenesulfonyl)pyrrolidine 2548998-83-8
1-(4-Chlorobenzenesulfonyl)-3-[({3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)methyl]pyrrolidine 2549005-32-3
2-(1-methyl-1H-indol-3-yl)-1-{4-[({2-methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidin-1-yl}ethan-1-one 2549022-70-8
5-(1-Benzyl-3-fluoropyrrolidin-3-yl)-3-phenyl-1,2,4-oxadiazole 2549043-18-5
1-(Azepan-1-yl)-2-{methyl[5-(3-phenyl-1,2,4-oxadiazol-5-yl)pyrimidin-4-yl]amino}ethan-1-one 2549021-05-6
2-[5-(3,4-dimethoxybenzoyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-1-methyl-1H-1,3-benzodiazole 2549026-70-0
tert-butyl 3-(4,5-dibromo-2H-1,2,3-triazol-2-yl)azetidine-1-carboxylate 2548993-50-4
Tert-butyl 4-{[(6-tert-butylpyridazin-3-yl)oxy]methyl}piperidine-1-carboxylate 2549054-33-1
N-(4-methanesulfonylphenyl)-5-[3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl]pyrimidin-4-amine 2549035-02-9
2-cyclopropyl-N-[(4-hydroxy-4,5,6,7-tetrahydro-1-benzothiophen-4-yl)methyl]acetamide 2548999-79-5

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