CAS号查询库

CAS号是公开的化学物质信息的最权威的集合。CAS号涵盖从1957年至今的科学文献中确定的物质，其他物质可追溯到20世纪初。它也称CAS编号(CAS Registry Number，或称CAS Number，CAS Rn，CAS #)，又称CAS登录号或CAS登记号码，是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金)的唯一的数字识别号码。美国化学会的下设组织化学文摘社(Chemical Abstracts Service，简称CAS)负责为每一种出现在文献中的物质分配一个CAS编号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS编号检索。

名称	英文名	物理化学性质	CAS号	分子式
5-bromo-6-(cyclobutyloxy)-2H-Pyrazolo[3,4-b]pyridine	5-bromo-6-(cyclobutyloxy)-2H-Pyrazolo[3,4-b]pyridine	分子量：268.11 密度：N/A 沸点：N/A 熔点：N/A	2573151-79-6	C₁₀H₁₀BrN₃O
1,1-Dimethylethyl 7-(2-aminoethyl)-2-azaspiro[3.5]nonane-2-carboxylate	1,1-Dimethylethyl 7-(2-aminoethyl)-2-azaspiro[3.5]nonane-2-carboxylate	分子量：268.39 密度：N/A 沸点：N/A 熔点：N/A	2573309-74-5	C₁₅H₂₈N₂O₂
5-Chloro-3,3-dimethyl-4-oxopentanenitrile	5-Chloro-3,3-dimethyl-4-oxopentanenitrile	分子量：159.61 密度：N/A 沸点：N/A 熔点：N/A	2573212-68-5	C₇H₁₀ClNO
2-Bromo-1-{1-methyl-2-oxabicyclo[2.2.2]octan-4-yl}ethan-1-one	2-Bromo-1-{1-methyl-2-oxabicyclo[2.2.2]octan-4-yl}ethan-1-one	分子量：247.13 密度：N/A 沸点：N/A 熔点：N/A	2573214-04-5	C₁₀H₁₅BrO₂
Methyl 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]cyclopentanecarboxylate	Methyl 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]cyclopentanecarboxylate	分子量：258.43 密度：N/A 沸点：N/A 熔点：N/A	2109762-21-0	C₁₃H₂₆O₃Si
8-iodo-6-methyl-5-Quinolinecarboxylic acid	8-iodo-6-methyl-5-Quinolinecarboxylic acid	分子量：313.09 密度：N/A 沸点：N/A 熔点：N/A	2583685-28-1	C₁₁H₈INO₂
(6-(2,4-Dimethyl-1H-imidazol-1-yl)-5-methylpyridazin-3-yl)methanamine hydrochloride	(6-(2,4-Dimethyl-1H-imidazol-1-yl)-5-methylpyridazin-3-yl)methanamine hydrochloride	分子量：253.73 密度：N/A 沸点：N/A 熔点：N/A	2130998-79-5	C₁₁H₁₆ClN₅
3-Bromo-5-(cyclopropylmethyl)pyridine	3-Bromo-5-(cyclopropylmethyl)pyridine	分子量：212.09 密度：N/A 沸点：N/A 熔点：N/A	2412764-80-6	C₉H₁₀BrN
[(4,4-Difluorocyclohexyl)methyl](pentan-3-yl)amine	[(4,4-Difluorocyclohexyl)methyl](pentan-3-yl)amine	分子量：219.31 密度：N/A 沸点：N/A 熔点：N/A	1873646-84-4	C₁₂H₂₃F₂N
1-Cyclopentyl-1-methylpropyl 2-propenoate	1-Cyclopentyl-1-methylpropyl 2-propenoate	分子量：196.29 密度：N/A 沸点：N/A 熔点：N/A	1979169-28-2	C₁₂H₂₀O₂
2-Tert-butylimidazo[1,2-b]pyridazine-6-carboxylic acid hydrochloride	2-Tert-butylimidazo[1,2-b]pyridazine-6-carboxylic acid hydrochloride	分子量：255.70 密度：N/A 沸点：N/A 熔点：N/A	2548990-17-4	C₁₁H₁₄ClN₃O₂
2-(Azetidin-3-yl)-6-(3-fluorophenyl)-2,3-dihydropyridazin-3-one hydrochloride	2-(Azetidin-3-yl)-6-(3-fluorophenyl)-2,3-dihydropyridazin-3-one hydrochloride	分子量：281.71 密度：N/A 沸点：N/A 熔点：N/A	2549038-96-0	C₁₃H₁₃ClFN₃O
1-[5-(1,3-Thiazol-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-2-[4-(trifluoromethyl)phenyl]ethan-1-one	1-[5-(1,3-Thiazol-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-2-[4-(trifluoromethyl)phenyl]ethan-1-one	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	2548998-41-8	C₁₈H₁₈F₃N₃OS
3-[4-(2,6-Dimethylpyrimidin-4-yl)piperazin-1-yl]-1,2-benzothiazole	3-[4-(2,6-Dimethylpyrimidin-4-yl)piperazin-1-yl]-1,2-benzothiazole	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	2329358-65-6	C₁₇H₁₉N₅S
3-[4-(5-Chloropyrimidin-2-yl)piperazin-1-yl]-1,2-benzothiazole	3-[4-(5-Chloropyrimidin-2-yl)piperazin-1-yl]-1,2-benzothiazole	分子量：331.8 密度：N/A 沸点：N/A 熔点：N/A	2324677-24-7	C₁₅H₁₄ClN₅S
2-Phenoxy-1-(5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrol-2-yl)ethan-1-one	2-Phenoxy-1-(5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrol-2-yl)ethan-1-one	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	2640946-98-9	C₁₉H₂₀N₆O₂
N-[2-(4-acetamido-3-iodophenyl)ethyl]acetamide	N-[2-(4-acetamido-3-iodophenyl)ethyl]acetamide	分子量：346.16 密度：N/A 沸点：N/A 熔点：N/A	2549033-63-6	C₁₂H₁₅IN₂O₂
N-methyl-1,2-dihydroacenaphthylen-1-amine hydrochloride	N-methyl-1,2-dihydroacenaphthylen-1-amine hydrochloride	分子量：219.71 密度：N/A 沸点：N/A 熔点：N/A	5668-68-8	C₁₃H₁₄ClN
1-Methyl-3-(4-methylbenzoyl)-1,4-dihydroquinolin-4-one	1-Methyl-3-(4-methylbenzoyl)-1,4-dihydroquinolin-4-one	分子量：277.3 密度：N/A 沸点：N/A 熔点：N/A	2640977-33-7	C₁₈H₁₅NO₂
4-[5-(Pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]pyrimidine	4-[5-(Pyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]pyrimidine	分子量：295.34 密度：N/A 沸点：N/A 熔点：N/A	2549015-83-8	C₁₆H₁₇N₅O
2-Methyl-6-{5-[5-(trifluoromethyl)pyridin-2-yl]-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl}-2,3-dihydropyridazin-3-one	2-Methyl-6-{5-[5-(trifluoromethyl)pyridin-2-yl]-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl}-2,3-dihydropyridazin-3-one	分子量：393.4 密度：N/A 沸点：N/A 熔点：N/A	2549025-36-5	C₁₈H₁₈F₃N₅O₂
2-({1-[(3,5-Dimethyl-1,2-oxazol-4-yl)sulfonyl]pyrrolidin-3-yl}methoxy)-6-(trifluoromethyl)pyridine	2-({1-[(3,5-Dimethyl-1,2-oxazol-4-yl)sulfonyl]pyrrolidin-3-yl}methoxy)-6-(trifluoromethyl)pyridine	分子量：405.4 密度：N/A 沸点：N/A 熔点：N/A	2548976-66-3	C₁₆H₁₈F₃N₃O₄S
3-[2-(4-{[(3-Chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-2-oxoethyl]-2,3-dihydro-1,3-benzoxazol-2-one	3-[2-(4-{[(3-Chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-2-oxoethyl]-2,3-dihydro-1,3-benzoxazol-2-one	分子量：401.8 密度：N/A 沸点：N/A 熔点：N/A	2640888-60-2	C₂₀H₂₀ClN₃O₄
3-{2-Oxo-2-[3-({[6-(trifluoromethyl)pyridin-2-yl]oxy}methyl)pyrrolidin-1-yl]ethyl}-2,3-dihydro-1,3-benzoxazol-2-one	3-{2-Oxo-2-[3-({[6-(trifluoromethyl)pyridin-2-yl]oxy}methyl)pyrrolidin-1-yl]ethyl}-2,3-dihydro-1,3-benzoxazol-2-one	分子量：421.4 密度：N/A 沸点：N/A 熔点：N/A	2548992-49-8	C₂₀H₁₈F₃N₃O₄
2-(4-Acetylphenyl)-4-[(3-fluorophenyl)methyl]-1,1-dioxo-1lambda6,2,4-benzothiadiazin-3-one	2-(4-Acetylphenyl)-4-[(3-fluorophenyl)methyl]-1,1-dioxo-1lambda6,2,4-benzothiadiazin-3-one	分子量：424.4 密度：N/A 沸点：N/A 熔点：N/A	2640835-02-3	C₂₂H₁₇FN₂O₄S
(1-((3-Fluoroazetidin-1-yl)methyl)cyclopropyl)methanol	(1-((3-Fluoroazetidin-1-yl)methyl)cyclopropyl)methanol	分子量：159.20 密度：N/A 沸点：N/A 熔点：N/A	2603432-87-5	C₈H₁₄FNO
1-Amino-4-(trimethylsilyl)-3-butyn-2-ol	1-Amino-4-(trimethylsilyl)-3-butyn-2-ol	分子量：157.29 密度：N/A 沸点：N/A 熔点：N/A	2161597-85-7	C₇H₁₅NOSi
4-Bromo-2-chloro-9-phenyl-9H-carbazole	4-Bromo-2-chloro-9-phenyl-9H-carbazole	分子量：356.6 密度：N/A 沸点：N/A 熔点：N/A	2440193-72-4	C₁₈H₁₁BrClN
(R)-4-(3,5-Bis-trifluoromethyl-phenyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-butyric acid	(R)-4-(3,5-Bis-trifluoromethyl-phenyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-butyric acid	分子量：537.4 密度：N/A 沸点：N/A 熔点：N/A	1260613-44-2	C₂₇H₂₁F₆NO₄
(R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-4-naphthalen-2-YL-butyric acid	(R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-4-naphthalen-2-YL-butyric acid	分子量：451.5 密度：N/A 沸点：N/A 熔点：N/A	1260587-09-4	C₂₉H₂₅NO₄
Benzyl 3-benzyl-6-(cyanomethylene)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate	Benzyl 3-benzyl-6-(cyanomethylene)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	2621937-19-5	C₂₃H₂₃N₃O₂
(5-Bromo-3-chloropyridin-2-yl)(cyclopropyl)methanone	(5-Bromo-3-chloropyridin-2-yl)(cyclopropyl)methanone	分子量：260.51 密度：N/A 沸点：N/A 熔点：N/A	2661483-39-0	C₉H₇BrClNO
7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2,2-dimethylhexahydro-3H-pyrrolizin-3-one	7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2,2-dimethylhexahydro-3H-pyrrolizin-3-one	分子量：421.6 密度：N/A 沸点：N/A 熔点：N/A	2621934-81-2	C₂₆H₃₅NO₂Si
4-[4-Methyl-1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-imidazol-5-yl]benzenamine	4-[4-Methyl-1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-imidazol-5-yl]benzenamine	分子量：303.47 密度：N/A 沸点：N/A 熔点：N/A	2550626-55-4	C₁₆H₂₅N₃OSi
1-(2-(Benzyloxy)ethyl)-2-(trifluoromethyl)-1H-imidazole	1-(2-(Benzyloxy)ethyl)-2-(trifluoromethyl)-1H-imidazole	分子量：270.25 密度：N/A 沸点：N/A 熔点：N/A	2621933-75-1	C₁₃H₁₃F₃N₂O
2-Chloro-3-methoxy-1-(methoxymethoxy)naphthalene	2-Chloro-3-methoxy-1-(methoxymethoxy)naphthalene	分子量：252.69 密度：N/A 沸点：N/A 熔点：N/A	2621937-11-7	C₁₃H₁₃ClO₃
rel-(2R,7aS)-7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2-methylhexahydro-3H-pyrrolizin-3-one	rel-(2R,7aS)-7a-(((tert-Butyldiphenylsilyl)oxy)methyl)-2-methylhexahydro-3H-pyrrolizin-3-one	分子量：407.6 密度：N/A 沸点：N/A 熔点：N/A	2621934-78-7	C₂₅H₃₃NO₂Si
Ethyl 2-(3-bromoisoxazol-5-yl)-3-methylbutanoate	Ethyl 2-(3-bromoisoxazol-5-yl)-3-methylbutanoate	分子量：276.13 密度：N/A 沸点：N/A 熔点：N/A	2724270-76-0	C₁₀H₁₄BrNO₃
Ethyl rel-4-((1S,4S,6R)-1-((tert-butoxycarbonyl)amino)-3-oxabicyclo[4.2.0]octan-4-yl)benzoate	Ethyl rel-4-((1S,4S,6R)-1-((tert-butoxycarbonyl)amino)-3-oxabicyclo[4.2.0]octan-4-yl)benzoate	分子量：375.5 密度：N/A 沸点：N/A 熔点：N/A	2216747-19-0	C₂₁H₂₉NO₅
(10R,13S)-3-hydroxy-10,13-dimethyl-3,4,5,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one	(10R,13S)-3-hydroxy-10,13-dimethyl-3,4,5,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one	分子量：288.4 密度：N/A 沸点：N/A 熔点：N/A	19671-47-7	C₁₉H₂₈O₂
3-Chloro-5-(2-ethoxyethoxy)aniline	3-Chloro-5-(2-ethoxyethoxy)aniline	分子量：215.67 密度：N/A 沸点：N/A 熔点：N/A	2817265-32-8	C₁₀H₁₄ClNO₂
3-Chloro-5-isobutoxyaniline	3-Chloro-5-isobutoxyaniline	分子量：199.68 密度：N/A 沸点：N/A 熔点：N/A	2802575-20-6	C₁₀H₁₄ClNO
4-(5-Methoxypyridin-2-yl)phenol	4-(5-Methoxypyridin-2-yl)phenol	分子量：201.22 密度：N/A 沸点：N/A 熔点：N/A	1609015-95-3	C₁₂H₁₁NO₂
(1,2,3,4-Tetrahydropyridin-4-yl)methanol hydrochloride	(1,2,3,4-Tetrahydropyridin-4-yl)methanol hydrochloride	分子量：149.62 密度：N/A 沸点：N/A 熔点：N/A	2387596-57-6	C₆H₁₂ClNO
tert-Butyl (2R,5R)-2-(bromomethyl)-5-methylmorpholine-4-carboxylate	tert-Butyl (2R,5R)-2-(bromomethyl)-5-methylmorpholine-4-carboxylate	分子量：294.19 密度：N/A 沸点：N/A 熔点：N/A	2440199-04-0	C₁₁H₂₀BrNO₃
2,2-Dimethyl-3-{methyl[(prop-2-en-1-yloxy)carbonyl]amino}propanoic acid	2,2-Dimethyl-3-{methyl[(prop-2-en-1-yloxy)carbonyl]amino}propanoic acid	分子量：215.25 密度：N/A 沸点：N/A 熔点：N/A	2680739-48-2	C₁₀H₁₇NO₄
N-[[2,5-Dimethyl-1-(8-quinolinyl)-1H-pyrrol-3-yl]methyl]-4-piperidinemethanamine	N-[[2,5-Dimethyl-1-(8-quinolinyl)-1H-pyrrol-3-yl]methyl]-4-piperidinemethanamine	分子量：348.5 密度：N/A 沸点：N/A 熔点：N/A	33025-35-3	C₂₂H₂₈N₄
2-(2,2,2-Trifluoroacetamido)pyrimidine-4-carboxylic acid	2-(2,2,2-Trifluoroacetamido)pyrimidine-4-carboxylic acid	分子量：235.12 密度：N/A 沸点：N/A 熔点：N/A	2680899-89-0	C₇H₄F₃N₃O₃
Poly(oxy-1,2-ethanediyl), I+/--(4-carboxy-1-oxobutyl)-I-methoxy-	Poly(oxy-1,2-ethanediyl), I+/--(4-carboxy-1-oxobutyl)-I-methoxy-	分子量：190.19 密度：N/A 沸点：N/A 熔点：N/A	79934-70-6	C₈H₁₄O₅
Methyl 4-bromo-2-chloro-5-(trifluoromethyl)benzoate	Methyl 4-bromo-2-chloro-5-(trifluoromethyl)benzoate	分子量：317.48 密度：N/A 沸点：N/A 熔点：N/A	2167951-05-3	C₉H₅BrClF₃O₂