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
4-butoxy-N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)benzamide	4-butoxy-N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)benzamide	分子量：463.6 密度：N/A 沸点：N/A 熔点：N/A	933212-54-5	C₂₃H₃₀FN₃O₄S
2-(3,4-dimethoxyphenyl)-N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)acetamide	2-(3,4-dimethoxyphenyl)-N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)acetamide	分子量：465.5 密度：N/A 沸点：N/A 熔点：N/A	933217-23-3	C₂₂H₂₈FN₃O₅S
1-{[1-(4-tert-butylbenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}-4-methylpiperidine	1-{[1-(4-tert-butylbenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}-4-methylpiperidine	分子量：453.6 密度：N/A 沸点：N/A 熔点：N/A	904823-40-1	C₂₁H₃₁N₃O₄S₂
N-(2-((4-(4-fluorophenyl)piperazin-1-yl)sulfonyl)ethyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	N-(2-((4-(4-fluorophenyl)piperazin-1-yl)sulfonyl)ethyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	分子量：474.6 密度：N/A 沸点：N/A 熔点：N/A	933217-54-0	C₂₃H₂₇FN₄O₄S
N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide	N-(2-{[4-(4-fluorophenyl)piperazin-1-yl]sulfonyl}ethyl)-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide	分子量：488.6 密度：N/A 沸点：N/A 熔点：N/A	933217-58-4	C₂₄H₂₉FN₄O₄S
1-((1-((4-ethoxyphenyl)sulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidine	1-((1-((4-ethoxyphenyl)sulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidine	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	956978-02-2	C₁₈H₂₅N₃O₅S₂
1-{[1-(4-butoxybenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}azepane	1-{[1-(4-butoxybenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}azepane	分子量：469.6 密度：N/A 沸点：N/A 熔点：N/A	956446-69-8	C₂₁H₃₁N₃O₅S₂
1-{[1-(4-butoxybenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}-4-methylpiperidine	1-{[1-(4-butoxybenzenesulfonyl)-3,5-dimethyl-1H-pyrazol-4-yl]sulfonyl}-4-methylpiperidine	分子量：469.6 密度：N/A 沸点：N/A 熔点：N/A	956978-01-1	C₂₁H₃₁N₃O₅S₂
2-(4-chlorophenyl)-N-(2-{[4-(4-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)acetamide	2-(4-chlorophenyl)-N-(2-{[4-(4-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)acetamide	分子量：452.0 密度：N/A 沸点：N/A 熔点：N/A	904830-23-5	C₂₁H₂₆ClN₃O₄S
2-hydroxypropyl nitrite	2-hydroxypropyl nitrite	分子量：105.09 密度：N/A 沸点：N/A 熔点：N/A	950478-72-5	C₃H₇NO₃
tributyl(pentyl)ammonium;chloride	tributyl(pentyl)ammonium;chloride	分子量：291.9 密度：N/A 沸点：N/A 熔点：N/A	916772-26-4	C₁₇H₃₈ClN
N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-2,2-diphenylacetamide	N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-2,2-diphenylacetamide	分子量：493.6 密度：N/A 沸点：N/A 熔点：N/A	932970-52-0	C₂₇H₃₁N₃O₄S
N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	分子量：486.6 密度：N/A 沸点：N/A 熔点：N/A	933027-92-0	C₂₄H₃₀N₄O₅S
N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-4-oxo-4H-chromene-2-carboxamide	N-(2-{[4-(2-methoxyphenyl)piperazin-1-yl]sulfonyl}ethyl)-4-oxo-4H-chromene-2-carboxamide	分子量：471.5 密度：N/A 沸点：N/A 熔点：N/A	933218-11-2	C₂₃H₂₅N₃O₆S
(2S)-3,3,3-trifluoro-2-((R)-2-hydroxy-1-phenyl-ethylamino)-2-methyl-propionitrile	(2S)-3,3,3-trifluoro-2-((R)-2-hydroxy-1-phenyl-ethylamino)-2-methyl-propionitrile	分子量：258.24 密度：N/A 沸点：N/A 熔点：N/A	911411-55-7	C₁₂H₁₃F₃N₂O
1-Benzyl-3-fluoro-3-methylazetidine	1-Benzyl-3-fluoro-3-methylazetidine	分子量：179.23 密度：N/A 沸点：N/A 熔点：N/A	910795-88-9	C₁₁H₁₄FN
1-(4-methylphenyl)-5-oxo-N-{2-[(4-phenylpiperazin-1-yl)sulfonyl]ethyl}pyrrolidine-3-carboxamide	1-(4-methylphenyl)-5-oxo-N-{2-[(4-phenylpiperazin-1-yl)sulfonyl]ethyl}pyrrolidine-3-carboxamide	分子量：470.6 密度：N/A 沸点：N/A 熔点：N/A	904831-57-8	C₂₄H₃₀N₄O₄S
1-(4-methoxyphenyl)-5-oxo-N-{2-[(4-phenylpiperazin-1-yl)sulfonyl]ethyl}pyrrolidine-3-carboxamide	1-(4-methoxyphenyl)-5-oxo-N-{2-[(4-phenylpiperazin-1-yl)sulfonyl]ethyl}pyrrolidine-3-carboxamide	分子量：486.6 密度：N/A 沸点：N/A 熔点：N/A	933218-14-5	C₂₄H₃₀N₄O₅S
2,4,6-trimethyl-N-(2-((4-phenylpiperazin-1-yl)sulfonyl)ethyl)benzenesulfonamide	2,4,6-trimethyl-N-(2-((4-phenylpiperazin-1-yl)sulfonyl)ethyl)benzenesulfonamide	分子量：451.6 密度：N/A 沸点：N/A 熔点：N/A	932970-85-9	C₂₁H₂₉N₃O₄S₂
3-methyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-4-nitrobenzamide	3-methyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-4-nitrobenzamide	分子量：338.32 密度：N/A 沸点：N/A 熔点：N/A	946381-48-2	C₁₇H₁₄N₄O₄
N-{2,8-dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-2-methyl-3-nitrobenzamide	N-{2,8-dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-2-methyl-3-nitrobenzamide	分子量：352.3 密度：N/A 沸点：N/A 熔点：N/A	946381-68-6	C₁₈H₁₆N₄O₄
(11bR)-2,6-Diethynyl-4-hydroxydinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide	(11bR)-2,6-Diethynyl-4-hydroxydinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide	分子量：396.3 密度：N/A 沸点：N/A 熔点：N/A	238742-60-4	C₂₄H₁₃O₄P
Ethyl 4-(2-((6-isopropyl-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidin-5-yl)thio)acetamido)benzoate	Ethyl 4-(2-((6-isopropyl-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidin-5-yl)thio)acetamido)benzoate	分子量：470.5 密度：N/A 沸点：N/A 熔点：N/A	946237-86-1	C₂₃H₂₆N₄O₅S
N-(4-acetylphenyl)-2-((6-isopropyl-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidin-5-yl)thio)acetamide	N-(4-acetylphenyl)-2-((6-isopropyl-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidin-5-yl)thio)acetamide	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	946309-34-8	C₂₂H₂₄N₄O₄S
Oct-4-yne-1,8-diol	Oct-4-yne-1,8-diol	分子量：142.20 密度：N/A 沸点：N/A 熔点：N/A	24595-59-3	C₈H₁₄O₂
N-(2,5-Dibromothiophen-3-yl)acetamide	N-(2,5-Dibromothiophen-3-yl)acetamide	分子量：298.99 密度：N/A 沸点：N/A 熔点：N/A	89581-54-4	C₆H₅Br₂NOS
(1R,4R,5R)-1,5-dihydroxy-4-(hydroxymethyl)-6,6-dimethyl-3-oxabicyclo[3.1.0]hexan-2-one	(1R,4R,5R)-1,5-dihydroxy-4-(hydroxymethyl)-6,6-dimethyl-3-oxabicyclo[3.1.0]hexan-2-one	分子量：188.18 密度：N/A 沸点：N/A 熔点：N/A	1932068-99-9	C₈H₁₂O₅
4-butoxy-N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)benzamide	4-butoxy-N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)benzamide	分子量：379.5 密度：N/A 沸点：N/A 熔点：N/A	933001-74-2	C₂₁H₂₅N₅O₂
N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-3,4,5-trimethoxybenzamide	N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-3,4,5-trimethoxybenzamide	分子量：397.4 密度：N/A 沸点：N/A 熔点：N/A	933009-85-9	C₂₀H₂₃N₅O₄
N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-2-fluorobenzamide	N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-2-fluorobenzamide	分子量：325.34 密度：N/A 沸点：N/A 熔点：N/A	933001-78-6	C₁₇H₁₆FN₅O
N-(1-amino-2-methylpropan-2-yl)-2-methylprop-2-enamide	N-(1-amino-2-methylpropan-2-yl)-2-methylprop-2-enamide	分子量：156.23 密度：N/A 沸点：N/A 熔点：N/A	2137703-87-6	C₈H₁₆N₂O
N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	933001-98-0	C₂₁H₂₂N₆O₂
N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-5-oxo-1-(p-tolyl)pyrrolidine-3-carboxamide	N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-5-oxo-1-(p-tolyl)pyrrolidine-3-carboxamide	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	933222-36-7	C₂₂H₂₄N₆O₂
N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-2-(methylsulfonyl)benzamide	N-((1-(3,4-dimethylphenyl)-1H-tetrazol-5-yl)methyl)-2-(methylsulfonyl)benzamide	分子量：385.4 密度：N/A 沸点：N/A 熔点：N/A	933222-40-3	C₁₈H₁₉N₅O₃S
Methyl 7-cyclopropyl-1-ethyl-2-((2-fluorobenzyl)thio)-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylate	Methyl 7-cyclopropyl-1-ethyl-2-((2-fluorobenzyl)thio)-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylate	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	933247-07-5	C₂₁H₂₀FN₃O₃S
2-methyl-N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)benzamide	2-methyl-N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)benzamide	分子量：293.32 密度：N/A 沸点：N/A 熔点：N/A	904824-91-5	C₁₇H₁₅N₃O₂
4-methyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	4-methyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	分子量：293.32 密度：N/A 沸点：N/A 熔点：N/A	904824-97-1	C₁₇H₁₅N₃O₂
3,4-dimethyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	3,4-dimethyl-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	分子量：307.3 密度：N/A 沸点：N/A 熔点：N/A	904825-03-2	C₁₈H₁₇N₃O₂
3-fluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	3-fluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	分子量：297.28 密度：N/A 沸点：N/A 熔点：N/A	904825-09-8	C₁₆H₁₂FN₃O₂
2,6-difluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	2,6-difluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	分子量：315.27 密度：N/A 沸点：N/A 熔点：N/A	904825-14-5	C₁₆H₁₁F₂N₃O₂
3,4-difluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	3,4-difluoro-N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}benzamide	分子量：315.27 密度：N/A 沸点：N/A 熔点：N/A	904825-19-0	C₁₆H₁₁F₂N₃O₂
N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-4-(trifluoromethyl)benzamide	N-{2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl}-4-(trifluoromethyl)benzamide	分子量：347.29 密度：N/A 沸点：N/A 熔点：N/A	904825-24-7	C₁₇H₁₂F₃N₃O₂
4alpha-Carboxy-5alpha-cholestan-3beta-ol	4alpha-Carboxy-5alpha-cholestan-3beta-ol	分子量：432.7 密度：N/A 沸点：N/A 熔点：N/A	913254-06-5	C₂₈H₄₈O₃
(R)-1-((Allyloxy)carbonyl)pyrrolidine-3-carboxylic acid	(R)-1-((Allyloxy)carbonyl)pyrrolidine-3-carboxylic acid	分子量：199.20 密度：N/A 沸点：N/A 熔点：N/A	132969-21-2	C₉H₁₃NO₄
Ahj9FJ6lhp	Ahj9FJ6lhp	分子量：590.6 密度：N/A 沸点：N/A 熔点：N/A	909415-27-6	C₃₀H₃₄N₆O₇
Ethyl 2-[4-({[3-({7-methyl-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methoxy)phenyl]carbamoyl}amino)phenyl]acetate	Ethyl 2-[4-({[3-({7-methyl-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methoxy)phenyl]carbamoyl}amino)phenyl]acetate	分子量：486.5 密度：N/A 沸点：N/A 熔点：N/A	959536-11-9	C₂₇H₂₆N₄O₅
(1S)-1-(4-chlorophenyl)but-3-en-1-amine	(1S)-1-(4-chlorophenyl)but-3-en-1-amine	分子量：181.66 密度：N/A 沸点：N/A 熔点：N/A	245735-57-3	C₁₀H₁₂ClN
(1s)-1-(2-Methoxyphenyl)but-3-en-1-amine	(1s)-1-(2-Methoxyphenyl)but-3-en-1-amine	分子量：177.24 密度：N/A 沸点：N/A 熔点：N/A	245735-58-4	C₁₁H₁₅NO
N-(5-{[(7-Methyl-4-oxo-1,4-dihydroquinolin-2-YL)methyl]sulfanyl}-1,3,4-thiadiazol-2-YL)butanamide	N-(5-{[(7-Methyl-4-oxo-1,4-dihydroquinolin-2-YL)methyl]sulfanyl}-1,3,4-thiadiazol-2-YL)butanamide	分子量：374.5 密度：N/A 沸点：N/A 熔点：N/A	933249-79-7	C₁₇H₁₈N₄O₂S₂
N-cyclopentyl-2-((1-(4-methoxybenzyl)-1H-imidazol-2-yl)thio)acetamide	N-cyclopentyl-2-((1-(4-methoxybenzyl)-1H-imidazol-2-yl)thio)acetamide	分子量：345.5 密度：N/A 沸点：N/A 熔点：N/A	869346-56-5	C₁₈H₂₃N₃O₂S