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
1-(3-fluorobenzoyl)-4-(4-fluorophenyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	1-(3-fluorobenzoyl)-4-(4-fluorophenyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	分子量：328.3 密度：N/A 沸点：N/A 熔点：N/A	933196-69-1	C₁₈H₁₄F₂N₂O₂
1-(3-chlorobenzoyl)-4-(4-fluorophenyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	1-(3-chlorobenzoyl)-4-(4-fluorophenyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	分子量：344.8 密度：N/A 沸点：N/A 熔点：N/A	933243-21-1	C₁₈H₁₄ClFN₂O₂
4-(4-chlorophenyl)-1-(3-fluorobenzoyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	4-(4-chlorophenyl)-1-(3-fluorobenzoyl)-2,2-dimethyl-1H-imidazol-5(2H)-one	分子量：344.8 密度：N/A 沸点：N/A 熔点：N/A	933196-73-7	C₁₈H₁₄ClFN₂O₂
1-((4-Isopropylphenyl)sulfonyl)piperidine-3-carboxylic acid	1-((4-Isopropylphenyl)sulfonyl)piperidine-3-carboxylic acid	分子量：311.4 密度：N/A 沸点：N/A 熔点：N/A	932976-67-5	C₁₅H₂₁NO₄S
N-(6-chloro-1,3-benzothiazol-2-yl)-1-ethyl-N-[(pyridin-2-yl)methyl]-1H-pyrazole-5-carboxamide	N-(6-chloro-1,3-benzothiazol-2-yl)-1-ethyl-N-[(pyridin-2-yl)methyl]-1H-pyrazole-5-carboxamide	分子量：397.9 密度：N/A 沸点：N/A 熔点：N/A	1172774-64-9	C₁₉H₁₆ClN₅OS
1-ethyl-3-methyl-N-(4-(thiophen-2-yl)thiazol-2-yl)-1H-pyrazole-5-carboxamide	1-ethyl-3-methyl-N-(4-(thiophen-2-yl)thiazol-2-yl)-1H-pyrazole-5-carboxamide	分子量：318.4 密度：N/A 沸点：N/A 熔点：N/A	1171759-50-4	C₁₄H₁₄N₄OS₂
N-[4-(2,5-dichlorothiophen-3-yl)-1,3-thiazol-2-yl]-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	N-[4-(2,5-dichlorothiophen-3-yl)-1,3-thiazol-2-yl]-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	分子量：387.3 密度：N/A 沸点：N/A 熔点：N/A	1170586-90-9	C₁₄H₁₂Cl₂N₄OS₂
N-(3-carbamoylthiophen-2-yl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	N-(3-carbamoylthiophen-2-yl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	分子量：278.33 密度：N/A 沸点：N/A 熔点：N/A	1172719-83-3	C₁₂H₁₄N₄O₂S
2-[4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)piperazin-1-yl]-4,7-dimethyl-1,3-benzothiazole	2-[4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)piperazin-1-yl]-4,7-dimethyl-1,3-benzothiazole	分子量：383.5 密度：N/A 沸点：N/A 熔点：N/A	1171514-23-0	C₂₀H₂₅N₅OS
2-[4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)piperazin-1-yl]-4-(methylsulfanyl)-1,3-benzothiazole	2-[4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)piperazin-1-yl]-4-(methylsulfanyl)-1,3-benzothiazole	分子量：401.6 密度：N/A 沸点：N/A 熔点：N/A	1170800-77-7	C₁₉H₂₃N₅OS₂
N-benzyl-1-ethyl-N-(5-methoxybenzo[d]thiazol-2-yl)-3-methyl-1H-pyrazole-5-carboxamide	N-benzyl-1-ethyl-N-(5-methoxybenzo[d]thiazol-2-yl)-3-methyl-1H-pyrazole-5-carboxamide	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	1170433-84-7	C₂₂H₂₂N₄O₂S
N-(2,4-difluorophenyl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	N-(2,4-difluorophenyl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	分子量：265.26 密度：N/A 沸点：N/A 熔点：N/A	1172078-85-1	C₁₃H₁₃F₂N₃O
N-(3,5-dimethylphenyl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	N-(3,5-dimethylphenyl)-1-ethyl-3-methyl-1H-pyrazole-5-carboxamide	分子量：257.33 密度：N/A 沸点：N/A 熔点：N/A	1171360-51-2	C₁₅H₁₉N₃O
4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)-1,2,3,4-tetrahydroquinoxalin-2-one	4-(1-ethyl-3-methyl-1H-pyrazole-5-carbonyl)-1,2,3,4-tetrahydroquinoxalin-2-one	分子量：284.31 密度：N/A 沸点：N/A 熔点：N/A	1171178-82-7	C₁₅H₁₆N₄O₂
2-(2-Fluorophenoxy)-1-(4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazin-1-yl)ethan-1-one	2-(2-Fluorophenoxy)-1-(4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazin-1-yl)ethan-1-one	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	1021263-49-9	C₁₇H₁₇FN₆O₂
4-([1,2,4]triazolo[4,3-b]pyridazin-6-yl)-N-(2,4-difluorophenyl)piperazine-1-carboxamide	4-([1,2,4]triazolo[4,3-b]pyridazin-6-yl)-N-(2,4-difluorophenyl)piperazine-1-carboxamide	分子量：359.33 密度：N/A 沸点：N/A 熔点：N/A	1040639-62-0	C₁₆H₁₅F₂N₇O
2-Dodecyl-3-hydroxy-5-methyl-1,4-naphthoquinone	2-Dodecyl-3-hydroxy-5-methyl-1,4-naphthoquinone	分子量：356.5 密度：N/A 沸点：N/A 熔点：N/A	63968-28-5	C₂₃H₃₂O₃
N-(3,4-difluorophenyl)-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-(3,4-difluorophenyl)-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：359.33 密度：N/A 沸点：N/A 熔点：N/A	1060205-12-0	C₁₆H₁₅F₂N₇O
1-(3,4-Dimethoxyphenyl)-3-(3-(6-methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)urea	1-(3,4-Dimethoxyphenyl)-3-(3-(6-methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)urea	分子量：419.4 密度：N/A 沸点：N/A 熔点：N/A	1060261-94-0	C₂₂H₂₁N₅O₄
N-(3-fluoro-4-methylphenyl)-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-(3-fluoro-4-methylphenyl)-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	1060205-51-7	C₁₇H₁₈FN₇O
N-cyclohexyl-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-cyclohexyl-4-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：329.40 密度：N/A 沸点：N/A 熔点：N/A	1040639-77-7	C₁₆H₂₃N₇O
1-[3-(Trifluoromethoxy)phenyl]propan-2-one	1-[3-(Trifluoromethoxy)phenyl]propan-2-one	分子量：218.17 密度：N/A 沸点：N/A 熔点：N/A	52771-18-3	C₁₀H₉F₃O₂
1-(3-(Trifluoromethylthio)phenyl)propan-1-one	1-(3-(Trifluoromethylthio)phenyl)propan-1-one	分子量：234.24 密度：N/A 沸点：N/A 熔点：N/A	1806418-20-1	C₁₀H₉F₃OS
N-(2H-1,3-benzodioxol-5-yl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-(2H-1,3-benzodioxol-5-yl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	1058237-39-0	C₁₈H₁₉N₇O₃
N-(2-ethylphenyl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-(2-ethylphenyl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1058448-10-4	C₁₉H₂₃N₇O
1-[2-(trifluoromethyl)phenyl]-1H-pyrazol-3-amine	1-[2-(trifluoromethyl)phenyl]-1H-pyrazol-3-amine	分子量：227.19 密度：N/A 沸点：N/A 熔点：N/A	1248322-84-0	C₁₀H₈F₃N₃
N-(2,3-dimethylphenyl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-(2,3-dimethylphenyl)-4-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1058448-12-6	C₁₉H₂₃N₇O
2-(4-Fluorophenoxy)-1-(4-(3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)ethanone	2-(4-Fluorophenoxy)-1-(4-(3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)ethanone	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	1058228-92-4	C₂₁H₁₉FN₆O₃
N-(2,3-dimethylphenyl)-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	N-(2,3-dimethylphenyl)-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	分子量：417.5 密度：N/A 沸点：N/A 熔点：N/A	1060177-63-0	C₂₂H₂₃N₇O₂
N-cyclohexyl-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	N-cyclohexyl-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	1058256-25-9	C₂₀H₂₅N₇O₂
N-benzyl-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	N-benzyl-4-[3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine-1-carboxamide	分子量：403.4 密度：N/A 沸点：N/A 熔点：N/A	1058487-88-9	C₂₁H₂₁N₇O₂
1-(4-(3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)-2-(2-fluorophenoxy)ethanone	1-(4-(3-Cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)-2-(2-fluorophenoxy)ethanone	分子量：396.4 密度：N/A 沸点：N/A 熔点：N/A	1058200-24-0	C₂₀H₂₁FN₆O₂
4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-phenylpiperazine-1-carboxamide	4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-phenylpiperazine-1-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1058200-35-3	C₁₉H₂₁N₇O
4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-(3,4-difluorophenyl)piperazine-1-carboxamide	4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-(3,4-difluorophenyl)piperazine-1-carboxamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	1058234-74-4	C₁₉H₁₉F₂N₇O
4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-(2,4-dimethoxyphenyl)piperazine-1-carboxamide	4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-N-(2,4-dimethoxyphenyl)piperazine-1-carboxamide	分子量：423.5 密度：N/A 沸点：N/A 熔点：N/A	1058234-75-5	C₂₁H₂₅N₇O₃
N-(benzo[d][1,3]dioxol-5-yl)-4-(3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazine-1-carboxamide	N-(benzo[d][1,3]dioxol-5-yl)-4-(3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazine-1-carboxamide	分子量：407.4 密度：N/A 沸点：N/A 熔点：N/A	1058234-76-6	C₂₀H₂₁N₇O₃
N-benzyl-4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	N-benzyl-4-{3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}piperazine-1-carboxamide	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	1058444-51-1	C₂₀H₂₃N₇O
2-(2-Chlorophenyl)-1-(4-(3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)ethanone	2-(2-Chlorophenyl)-1-(4-(3-cyclopropyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperazin-1-yl)ethanone	分子量：396.9 密度：N/A 沸点：N/A 熔点：N/A	1058234-87-9	C₂₀H₂₁ClN₆O
1,5-dimethyl-N-(3-methyl-1-phenyl-1H-pyrazol-5-yl)-1H-pyrazole-3-carboxamide	1,5-dimethyl-N-(3-methyl-1-phenyl-1H-pyrazol-5-yl)-1H-pyrazole-3-carboxamide	分子量：295.34 密度：N/A 沸点：N/A 熔点：N/A	1171948-24-5	C₁₆H₁₇N₅O
2-[(2-Hydroxyethyl)(pyridin-2-yl)amino]ethan-1-ol	2-[(2-Hydroxyethyl)(pyridin-2-yl)amino]ethan-1-ol	分子量：182.22 密度：N/A 沸点：N/A 熔点：N/A	4439-34-3	C₉H₁₄N₂O₂
6-(4-((2-Fluorophenyl)sulfonyl)piperazin-1-yl)-3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine	6-(4-((2-Fluorophenyl)sulfonyl)piperazin-1-yl)-3-(furan-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine	分子量：428.4 密度：N/A 沸点：N/A 熔点：N/A	1060226-89-2	C₁₉H₁₇FN₆O₃S
1-Piperazinecarboxamide, 4-methyl-n-(1-methylethyl)-	1-Piperazinecarboxamide, 4-methyl-n-(1-methylethyl)-	分子量：185.27 密度：N/A 沸点：N/A 熔点：N/A	347908-41-2	C₉H₁₉N₃O
N-{4-[2-(morpholin-4-yl)-2-oxoethyl]phenyl}thiophene-2-sulfonamide	N-{4-[2-(morpholin-4-yl)-2-oxoethyl]phenyl}thiophene-2-sulfonamide	分子量：366.5 密度：N/A 沸点：N/A 熔点：N/A	1060254-89-8	C₁₆H₁₈N₂O₄S₂
1-(2-Chloroethoxy)-4-(methylsulfanyl)benzene	1-(2-Chloroethoxy)-4-(methylsulfanyl)benzene	分子量：202.70 密度：N/A 沸点：N/A 熔点：N/A	34334-21-9	C₉H₁₁ClOS
1-Chloro-3-[4-(1-methylethylthio)phenoxy]propane	1-Chloro-3-[4-(1-methylethylthio)phenoxy]propane	分子量：244.78 密度：N/A 沸点：N/A 熔点：N/A	70551-47-2	C₁₂H₁₇ClOS
7H-Purin-6-amine, 2,7,8-trimethyl-	7H-Purin-6-amine, 2,7,8-trimethyl-	分子量：177.21 密度：N/A 沸点：N/A 熔点：N/A	1367865-94-8	C₈H₁₁N₅
N-(6-((2-(indolin-1-yl)-2-oxoethyl)thio)pyridazin-3-yl)-4-methylbenzamide	N-(6-((2-(indolin-1-yl)-2-oxoethyl)thio)pyridazin-3-yl)-4-methylbenzamide	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	1021226-62-9	C₂₂H₂₀N₄O₂S
4-methyl-N-(6-((2-((4-methylthiazol-2-yl)amino)-2-oxoethyl)thio)pyridazin-3-yl)benzamide	4-methyl-N-(6-((2-((4-methylthiazol-2-yl)amino)-2-oxoethyl)thio)pyridazin-3-yl)benzamide	分子量：399.5 密度：N/A 沸点：N/A 熔点：N/A	1021226-69-6	C₁₈H₁₇N₅O₂S₂
4-methyl-N-{6-[({[(thiophen-2-yl)methyl]carbamoyl}methyl)sulfanyl]pyridazin-3-yl}benzamide	4-methyl-N-{6-[({[(thiophen-2-yl)methyl]carbamoyl}methyl)sulfanyl]pyridazin-3-yl}benzamide	分子量：398.5 密度：N/A 沸点：N/A 熔点：N/A	1021227-13-3	C₁₉H₁₈N₄O₂S₂
2-(2-Fluorobenzyloxy)-butane-1,4-diol	2-(2-Fluorobenzyloxy)-butane-1,4-diol	分子量：214.23 密度：N/A 沸点：N/A 熔点：N/A	68363-61-1	C₁₁H₁₅FO₃