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
6-(3,4-dimethylphenyl)-2-[2-(6-methyl-2,3-dihydro-4H-1,4-benzoxazin-4-yl)-2-oxoethyl]pyridazin-3(2H)-one	6-(3,4-dimethylphenyl)-2-[2-(6-methyl-2,3-dihydro-4H-1,4-benzoxazin-4-yl)-2-oxoethyl]pyridazin-3(2H)-one	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	1252919-38-2	C₂₃H₂₃N₃O₃
2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-methoxybenzyl)acetamide	2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-methoxybenzyl)acetamide	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	1252896-20-0	C₂₂H₂₃N₃O₃
N-(2,3-dimethoxybenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2,3-dimethoxybenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：407.5 密度：N/A 沸点：N/A 熔点：N/A	1252921-91-7	C₂₃H₂₅N₃O₄
N-tert-butyl-2-[3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-tert-butyl-2-[3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：313.4 密度：N/A 沸点：N/A 熔点：N/A	1252900-75-6	C₁₈H₂₃N₃O₂
2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-propylacetamide	2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-propylacetamide	分子量：299.37 密度：N/A 沸点：N/A 熔点：N/A	1252849-67-4	C₁₇H₂₁N₃O₂
2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3,4,5-trimethoxyphenyl)acetamide	2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3,4,5-trimethoxyphenyl)acetamide	分子量：423.5 密度：N/A 沸点：N/A 熔点：N/A	1252879-13-2	C₂₃H₂₅N₃O₅
N-(3,4-dimethoxybenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(3,4-dimethoxybenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：407.5 密度：N/A 沸点：N/A 熔点：N/A	1252844-95-3	C₂₃H₂₅N₃O₄
2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide	2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1252917-85-3	C₂₁H₂₀FN₃O₂
N-(4-bromo-2-methylphenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(4-bromo-2-methylphenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：426.3 密度：N/A 沸点：N/A 熔点：N/A	1252909-90-2	C₂₁H₂₀BrN₃O₂
N-(3-chlorophenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-methylacetamide	N-(3-chlorophenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-methylacetamide	分子量：381.9 密度：N/A 沸点：N/A 熔点：N/A	1252922-95-4	C₂₁H₂₀ClN₃O₂
2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-fluoro-4-methoxyphenyl)acetamide	2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-fluoro-4-methoxyphenyl)acetamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	1252901-21-5	C₂₁H₂₀FN₃O₃
N-(2-chloro-4-fluorophenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2-chloro-4-fluorophenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：385.8 密度：N/A 沸点：N/A 熔点：N/A	1252905-93-3	C₂₀H₁₇ClFN₃O₂
N-(2-bromo-4-methylphenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2-bromo-4-methylphenyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：426.3 密度：N/A 沸点：N/A 熔点：N/A	1252913-59-9	C₂₁H₂₀BrN₃O₂
N-(3-chloro-4-fluorobenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(3-chloro-4-fluorobenzyl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：399.8 密度：N/A 沸点：N/A 熔点：N/A	1252906-44-7	C₂₁H₁₉ClFN₃O₂
methyl 4-chloro-2-({[3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)benzoate	methyl 4-chloro-2-({[3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)benzoate	分子量：425.9 密度：N/A 沸点：N/A 熔点：N/A	1252853-80-7	C₂₂H₂₀ClN₃O₄
N-(2,3-dihydro-1H-inden-5-yl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2,3-dihydro-1H-inden-5-yl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1252898-23-9	C₂₃H₂₃N₃O₂
N-(2,3-dihydro-1H-inden-1-yl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2,3-dihydro-1H-inden-1-yl)-2-(3-(3,4-dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1252923-71-9	C₂₃H₂₃N₃O₂
N-((3-(4-(benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)-N-ethylethanamine	N-((3-(4-(benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)-N-ethylethanamine	分子量：337.4 密度：N/A 沸点：N/A 熔点：N/A	1252899-04-9	C₂₀H₂₃N₃O₂
3-(4-(Benzyloxy)phenyl)-5-(pyrrolidin-1-ylmethyl)-1,2,4-oxadiazole	3-(4-(Benzyloxy)phenyl)-5-(pyrrolidin-1-ylmethyl)-1,2,4-oxadiazole	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	1252823-15-6	C₂₀H₂₁N₃O₂
(R)-2-(((Allyloxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)pentanoic acid	(R)-2-(((Allyloxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)pentanoic acid	分子量：316.35 密度：N/A 沸点：N/A 熔点：N/A	1128109-40-9	C₁₄H₂₄N₂O₆
1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)piperidine-4-carboxamide	1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)piperidine-4-carboxamide	分子量：392.5 密度：N/A 沸点：N/A 熔点：N/A	1252817-91-6	C₂₂H₂₄N₄O₃
4-((3-(4-(Benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)morpholine	4-((3-(4-(Benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)morpholine	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	1252863-93-6	C₂₀H₂₁N₃O₃
3-((4-Aminophenyl)thio)dihydrofuran-2(3H)-one	3-((4-Aminophenyl)thio)dihydrofuran-2(3H)-one	分子量：209.27 密度：N/A 沸点：N/A 熔点：N/A	1095660-34-6	C₁₀H₁₁NO₂S
1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-phenylpiperazine	1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-phenylpiperazine	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1252850-92-2	C₂₆H₂₆N₄O₂
1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(4-methoxyphenyl)piperazine	1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(4-methoxyphenyl)piperazine	分子量：456.5 密度：N/A 沸点：N/A 熔点：N/A	1252928-45-2	C₂₇H₂₈N₄O₃
1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(2-fluorophenyl)piperazine	1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(2-fluorophenyl)piperazine	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	1252820-00-0	C₂₆H₂₅FN₄O₂
(4-((3-(4-(Benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)piperazin-1-yl)(furan-2-yl)methanone	(4-((3-(4-(Benzyloxy)phenyl)-1,2,4-oxadiazol-5-yl)methyl)piperazin-1-yl)(furan-2-yl)methanone	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	1252851-68-5	C₂₅H₂₄N₄O₄
2-[4-({3-[4-(benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)piperazin-1-yl]-N-(4-methylphenyl)acetamide	2-[4-({3-[4-(benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)piperazin-1-yl]-N-(4-methylphenyl)acetamide	分子量：497.6 密度：N/A 沸点：N/A 熔点：N/A	1252906-46-9	C₂₉H₃₁N₅O₃
1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(2-methylphenyl)piperazine	1-({3-[4-(Benzyloxy)phenyl]-1,2,4-oxadiazol-5-yl}methyl)-4-(2-methylphenyl)piperazine	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	1252921-44-0	C₂₇H₂₈N₄O₂
1-(2,5-dimethoxyphenyl)-3-[2-(2-methyl-1H-indol-3-yl)ethyl]thiourea	1-(2,5-dimethoxyphenyl)-3-[2-(2-methyl-1H-indol-3-yl)ethyl]thiourea	分子量：369.5 密度：N/A 沸点：N/A 熔点：N/A	847388-65-2	C₂₀H₂₃N₃O₂S
1-(2-(2-methyl-1H-indol-3-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)thiourea	1-(2-(2-methyl-1H-indol-3-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)thiourea	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	847388-77-6	C₁₉H₁₈F₃N₃S
1-(2-(2-methyl-1H-indol-3-yl)ethyl)-3-(4-nitrophenyl)thiourea	1-(2-(2-methyl-1H-indol-3-yl)ethyl)-3-(4-nitrophenyl)thiourea	分子量：354.4 密度：N/A 沸点：N/A 熔点：N/A	847388-79-8	C₁₈H₁₈N₄O₂S
1-(3,5-dimethylphenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	1-(3,5-dimethylphenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	分子量：355.5 密度：N/A 沸点：N/A 熔点：N/A	847388-95-8	C₂₀H₂₂FN₃S
1-(2-ethyl-6-methylphenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	1-(2-ethyl-6-methylphenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	分子量：369.5 密度：N/A 沸点：N/A 熔点：N/A	847388-96-9	C₂₁H₂₄FN₃S
1-(3-bromophenyl)-3-(2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl)thiourea	1-(3-bromophenyl)-3-(2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl)thiourea	分子量：406.3 密度：N/A 沸点：N/A 熔点：N/A	847389-10-0	C₁₈H₁₇BrFN₃S
1-(4-bromophenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	1-(4-bromophenyl)-3-[2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl]thiourea	分子量：406.3 密度：N/A 沸点：N/A 熔点：N/A	847389-11-1	C₁₈H₁₇BrFN₃S
1-(2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl)-3-(4-(trifluoromethyl)phenyl)thiourea	1-(2-(5-fluoro-2-methyl-1H-indol-3-yl)ethyl)-3-(4-(trifluoromethyl)phenyl)thiourea	分子量：395.4 密度：N/A 沸点：N/A 熔点：N/A	847389-14-4	C₁₉H₁₇F₄N₃S
N-(propan-2-yl)-4-propylcyclohexanamine	N-(propan-2-yl)-4-propylcyclohexanamine	分子量：183.33 密度：N/A 沸点：N/A 熔点：N/A	1038230-71-5	C₁₂H₂₅N
(S)-2-(3,5-Dichlorophenyl)piperidine	(S)-2-(3,5-Dichlorophenyl)piperidine	分子量：230.13 密度：N/A 沸点：N/A 熔点：N/A	1213141-67-3	C₁₁H₁₃Cl₂N
(2S)-1-(1-benzothiophen-3-yl)propan-2-amine	(2S)-1-(1-benzothiophen-3-yl)propan-2-amine	分子量：191.29 密度：N/A 沸点：N/A 熔点：N/A	788815-11-2	C₁₁H₁₃NS
(Heptan-2-yl)[(pyridin-2-yl)methyl]amine	(Heptan-2-yl)[(pyridin-2-yl)methyl]amine	分子量：206.33 密度：N/A 沸点：N/A 熔点：N/A	1038223-03-8	C₁₃H₂₂N₂
3-(2-(5-Methyl-1H-benzo[d]imidazol-2-yl)ethyl)aniline	3-(2-(5-Methyl-1H-benzo[d]imidazol-2-yl)ethyl)aniline	分子量：251.33 密度：N/A 沸点：N/A 熔点：N/A	886495-91-6	C₁₆H₁₇N₃
1-methyl-2-(2-phenylethyl)-1H-benzimidazol-5-amine	1-methyl-2-(2-phenylethyl)-1H-benzimidazol-5-amine	分子量：251.33 密度：N/A 沸点：N/A 熔点：N/A	884142-96-5	C₁₆H₁₇N₃
4-(6,8-Dichloro-2-methylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(6,8-Dichloro-2-methylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：314.2 密度：N/A 沸点：N/A 熔点：N/A	886503-68-0	C₁₁H₉Cl₂N₅S
4-(6-Bromo-2,8-dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(6-Bromo-2,8-dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：338.23 密度：N/A 沸点：N/A 熔点：N/A	886503-73-7	C₁₂H₁₂BrN₅S
4-(6-Bromo-2-methyl-8-nitroimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(6-Bromo-2-methyl-8-nitroimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：369.20 密度：N/A 沸点：N/A 熔点：N/A	886503-78-2	C₁₁H₉BrN₆O₂S
4-(8-Bromo-2,6-dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(8-Bromo-2,6-dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：338.23 密度：N/A 沸点：N/A 熔点：N/A	886503-83-9	C₁₂H₁₂BrN₅S
4-(6-Bromo-2-methylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(6-Bromo-2-methylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：324.20 密度：N/A 沸点：N/A 熔点：N/A	886503-88-4	C₁₁H₁₀BrN₅S
2-Hydrazinyl-4-(2-methyl-6-nitroimidazo[1,2-a]pyridin-3-yl)thiazole	2-Hydrazinyl-4-(2-methyl-6-nitroimidazo[1,2-a]pyridin-3-yl)thiazole	分子量：290.30 密度：N/A 沸点：N/A 熔点：N/A	886503-92-0	C₁₁H₁₀N₆O₂S
4-(2,6-Dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	4-(2,6-Dimethylimidazo[1,2-a]pyridin-3-yl)-2-hydrazinylthiazole	分子量：259.33 密度：N/A 沸点：N/A 熔点：N/A	886503-96-4	C₁₂H₁₃N₅S