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
2-(3'-(3,4-dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)-N-(2-methoxyphenyl)acetamide	2-(3'-(3,4-dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)-N-(2-methoxyphenyl)acetamide	分子量：487.6 密度：N/A 沸点：N/A 熔点：N/A	894557-37-0	C₂₇H₂₅N₃O₄S
N-(4,6-difluorobenzo[d]thiazol-2-yl)-N-(2-(dimethylamino)ethyl)-3-((4-fluorophenyl)thio)propanamide hydrochloride	N-(4,6-difluorobenzo[d]thiazol-2-yl)-N-(2-(dimethylamino)ethyl)-3-((4-fluorophenyl)thio)propanamide hydrochloride	分子量：476.0 密度：N/A 沸点：N/A 熔点：N/A	1215407-99-0	C₂₀H₂₁ClF₃N₃OS₂
1-[(2-Chloro-6-fluorophenyl)methyl]-3'-(3,5-dimethylphenyl)-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione	1-[(2-Chloro-6-fluorophenyl)methyl]-3'-(3,5-dimethylphenyl)-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione	分子量：467.0 密度：N/A 沸点：N/A 熔点：N/A	893786-25-9	C₂₅H₂₀ClFN₂O₂S
Ethyl 3-amino-3-(4-tert-butylphenyl)propanoate	Ethyl 3-amino-3-(4-tert-butylphenyl)propanoate	分子量：249.35 密度：N/A 沸点：N/A 熔点：N/A	496912-08-4	C₁₅H₂₃NO₂
2-(3'-(3,5-Dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)acetamide	2-(3'-(3,5-Dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)acetamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	894559-25-2	C₂₀H₁₉N₃O₃S
2-(3'-(3,5-dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)-N-(2-ethyl-6-methylphenyl)acetamide	2-(3'-(3,5-dimethylphenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)-N-(2-ethyl-6-methylphenyl)acetamide	分子量：499.6 密度：N/A 沸点：N/A 熔点：N/A	893786-40-8	C₂₉H₂₉N₃O₃S
2-Bromo-5-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-1,3-dimethylbenzene	2-Bromo-5-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-1,3-dimethylbenzene	分子量：353.07 密度：N/A 沸点：N/A 熔点：N/A	353272-55-6	C₁₁H₈BrF₇
5-amino-N-(2,4-dimethoxyphenyl)-1-{2-[(2,3-dimethylphenyl)amino]-2-oxoethyl}-1H-1,2,3-triazole-4-carboxamide	5-amino-N-(2,4-dimethoxyphenyl)-1-{2-[(2,3-dimethylphenyl)amino]-2-oxoethyl}-1H-1,2,3-triazole-4-carboxamide	分子量：424.5 密度：N/A 沸点：N/A 熔点：N/A	894564-53-5	C₂₁H₂₄N₆O₄
N-(3-chlorophenyl)-2-(3'-(3,4-difluorophenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)acetamide	N-(3-chlorophenyl)-2-(3'-(3,4-difluorophenyl)-2,4'-dioxospiro[indoline-3,2'-thiazolidin]-1-yl)acetamide	分子量：499.9 密度：N/A 沸点：N/A 熔点：N/A	894563-44-1	C₂₄H₁₆ClF₂N₃O₃S
1-Chloro-2-octanol	1-Chloro-2-octanol	分子量：164.67 密度：N/A 沸点：N/A 熔点：N/A	19376-62-6	C₈H₁₇ClO
Ethyl 5,6-dibromothieno[3,2-b]thiophene-2-carboxylate	Ethyl 5,6-dibromothieno[3,2-b]thiophene-2-carboxylate	分子量：370.1 密度：N/A 沸点：N/A 熔点：N/A	161941-63-5	C₉H₆Br₂O₂S₂
N-[2-(2,5-dimethoxyphenyl)ethyl]-3-methyl-[1,2]oxazolo[5,4-d]pyrimidin-4-amine	N-[2-(2,5-dimethoxyphenyl)ethyl]-3-methyl-[1,2]oxazolo[5,4-d]pyrimidin-4-amine	分子量：314.34 密度：N/A 沸点：N/A 熔点：N/A	894589-02-7	C₁₆H₁₈N₄O₃
N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-4-methoxy-3-methylbenzenesulfonamide	N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-4-methoxy-3-methylbenzenesulfonamide	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	946263-81-6	C₁₈H₁₉N₃O₅S
N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-4-methoxybenzenesulfonamide	N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-4-methoxybenzenesulfonamide	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	946263-85-0	C₁₇H₁₇N₃O₅S
4-fluoro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(trifluoromethyl)benzenesulfonamide	4-fluoro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(trifluoromethyl)benzenesulfonamide	分子量：431.4 密度：N/A 沸点：N/A 熔点：N/A	946263-99-6	C₁₇H₁₃F₄N₃O₄S
5-chloro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)thiophene-2-sulfonamide	5-chloro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)thiophene-2-sulfonamide	分子量：385.8 密度：N/A 沸点：N/A 熔点：N/A	946264-08-0	C₁₄H₁₂ClN₃O₄S₂
2-[(2,3-Dimethylphenyl)amino]benzyl alcohol	2-[(2,3-Dimethylphenyl)amino]benzyl alcohol	分子量：227.30 密度：N/A 沸点：N/A 熔点：N/A	1804-52-0	C₁₅H₁₇NO
2,3-dichloro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)benzenesulfonamide	2,3-dichloro-N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)benzenesulfonamide	分子量：414.3 密度：N/A 沸点：N/A 熔点：N/A	946264-17-1	C₁₆H₁₃Cl₂N₃O₄S
N-(4-(N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)sulfamoyl)phenyl)propionamide	N-(4-(N-(2-(3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)sulfamoyl)phenyl)propionamide	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	946264-26-2	C₁₉H₂₀N₄O₅S
4-methoxy-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)benzamide	4-methoxy-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)benzamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	946264-29-5	C₁₈H₁₇N₃O₃S
4-Methyl-3-nitro-5-sulfamoylbenzoic acid	4-Methyl-3-nitro-5-sulfamoylbenzoic acid	分子量：260.23 密度：N/A 沸点：N/A 熔点：N/A	50714-14-2	C₈H₈N₂O₆S
2-ethoxy-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)acetamide	2-ethoxy-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)acetamide	分子量：307.37 密度：N/A 沸点：N/A 熔点：N/A	954033-55-7	C₁₄H₁₇N₃O₃S
2,5-dichloro-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)benzamide	2,5-dichloro-N-(2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)ethyl)benzamide	分子量：394.3 密度：N/A 沸点：N/A 熔点：N/A	946239-55-0	C₁₇H₁₃Cl₂N₃O₂S
4,5-Bis(4-methoxyphenyl)-2-methylpyrimidine	4,5-Bis(4-methoxyphenyl)-2-methylpyrimidine	分子量：306.4 密度：N/A 沸点：N/A 熔点：N/A	66521-89-9	C₁₉H₁₈N₂O₂
N-(benzo[d]thiazol-2-yl)-4-(N,N-dimethylsulfamoyl)-N-(pyridin-2-ylmethyl)benzamide	N-(benzo[d]thiazol-2-yl)-4-(N,N-dimethylsulfamoyl)-N-(pyridin-2-ylmethyl)benzamide	分子量：452.6 密度：N/A 沸点：N/A 熔点：N/A	898351-06-9	C₂₂H₂₀N₄O₃S₂
1-Methyl-3'-[3-(trifluoromethyl)phenyl]-1,2-dihydrospiro[indole-3,2'-[1lambda6,3]thiazolidine]-1',1',2,4'-tetrone	1-Methyl-3'-[3-(trifluoromethyl)phenyl]-1,2-dihydrospiro[indole-3,2'-[1lambda6,3]thiazolidine]-1',1',2,4'-tetrone	分子量：410.4 密度：N/A 沸点：N/A 熔点：N/A	894872-74-3	C₁₈H₁₃F₃N₂O₄S
[3,3a(2)-Bipiperidine]-5,5a(2)-dione	[3,3a(2)-Bipiperidine]-5,5a(2)-dione	分子量：196.25 密度：N/A 沸点：N/A 熔点：N/A	343774-52-7	C₁₀H₁₆N₂O₂
methyl 3-(furan-3-yl)-5-methyl-1H-pyrazole-4-carboxylate	methyl 3-(furan-3-yl)-5-methyl-1H-pyrazole-4-carboxylate	分子量：206.20 密度：N/A 沸点：N/A 熔点：N/A	76923-38-1	C₁₀H₁₀N₂O₃
2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(3-(trifluoromethyl)phenyl)acetamide	2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(3-(trifluoromethyl)phenyl)acetamide	分子量：445.4 密度：N/A 沸点：N/A 熔点：N/A	1007278-52-5	C₂₂H₂₂F₃N₅O₂
2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(4-(trifluoromethyl)phenyl)acetamide	2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(4-(trifluoromethyl)phenyl)acetamide	分子量：445.4 密度：N/A 沸点：N/A 熔点：N/A	1006784-90-2	C₂₂H₂₂F₃N₅O₂
2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(4-(trifluoromethoxy)phenyl)acetamide	2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(4-(trifluoromethoxy)phenyl)acetamide	分子量：461.4 密度：N/A 沸点：N/A 熔点：N/A	1006859-42-2	C₂₂H₂₂F₃N₅O₃
ethyl 2-({[2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl]acetyl}amino)benzoate	ethyl 2-({[2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl]acetyl}amino)benzoate	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	1006819-85-7	C₂₄H₂₇N₅O₄
ethyl 4-({[2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl]acetyl}amino)benzoate	ethyl 4-({[2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl]acetyl}amino)benzoate	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	1007278-60-5	C₂₄H₂₇N₅O₄
N-(4-acetylphenyl)-2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamide	N-(4-acetylphenyl)-2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamide	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	1006859-47-7	C₂₃H₂₅N₅O₃
5-(5,5-Dimethyl-1,3-dioxan-2-yl)-1H-pyrrole-2-carbonitrile	5-(5,5-Dimethyl-1,3-dioxan-2-yl)-1H-pyrrole-2-carbonitrile	分子量：206.24 密度：N/A 沸点：N/A 熔点：N/A	81706-59-4	C₁₁H₁₄N₂O₂
N-(3-acetamidophenyl)-2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamide	N-(3-acetamidophenyl)-2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamide	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	1006819-90-4	C₂₃H₂₆N₆O₃
ethyl 2-(2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamido)acetate	ethyl 2-(2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamido)acetate	分子量：387.4 密度：N/A 沸点：N/A 熔点：N/A	1006819-95-9	C₁₉H₂₅N₅O₄
4-(2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamido)benzamide	4-(2-(2-(3,5-dimethyl-1H-pyrazol-1-yl)-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamido)benzamide	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	1007279-00-6	C₂₂H₂₄N₆O₃
N-(3-formylphenyl)-N-methylacetamide	N-(3-formylphenyl)-N-methylacetamide	分子量：177.20 密度：N/A 沸点：N/A 熔点：N/A	82772-22-3	C₁₀H₁₁NO₂
tert-butyl (2S)-2-(pent-4-enoyl)pyrrolidine-1-carboxylate	tert-butyl (2S)-2-(pent-4-enoyl)pyrrolidine-1-carboxylate	分子量：253.34 密度：N/A 沸点：N/A 熔点：N/A	106493-65-6	C₁₄H₂₃NO₃
4-Nitro-2-(phenylmethoxy)benzonitrile	4-Nitro-2-(phenylmethoxy)benzonitrile	分子量：254.24 密度：N/A 沸点：N/A 熔点：N/A	380241-64-5	C₁₄H₁₀N₂O₃
(4R)-1-Boc-4-butoxy-L-proline	(4R)-1-Boc-4-butoxy-L-proline	分子量：287.35 密度：N/A 沸点：N/A 熔点：N/A	356547-41-6	C₁₄H₂₅NO₅
7-Chloro-5-methyl-2-(methylthio)thiazolo[4,5-d]pyrimidine	7-Chloro-5-methyl-2-(methylthio)thiazolo[4,5-d]pyrimidine	分子量：231.7 密度：N/A 沸点：N/A 熔点：N/A	119011-57-3	C₇H₆ClN₃S₂
(4-(4,7-Dimethylbenzo[d]thiazol-2-yl)piperazin-1-yl)(5-nitrobenzo[b]thiophen-2-yl)methanone	(4-(4,7-Dimethylbenzo[d]thiazol-2-yl)piperazin-1-yl)(5-nitrobenzo[b]thiophen-2-yl)methanone	分子量：452.6 密度：N/A 沸点：N/A 熔点：N/A	897485-13-1	C₂₂H₂₀N₄O₃S₂
N-(2-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)ethyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine oxalate	N-(2-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)ethyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine oxalate	分子量：457.5 密度：N/A 沸点：N/A 熔点：N/A	317328-54-4	C₂₂H₂₃N₃O₆S
Xenon-122	Xenon-122	分子量：121.9084 密度：N/A 沸点：N/A 熔点：N/A	15151-09-4	Xe
1-[3-(Hydroxymethyl)pyrrolidin-1-yl]-2,2-dimethylpropan-1-one	1-[3-(Hydroxymethyl)pyrrolidin-1-yl]-2,2-dimethylpropan-1-one	分子量：185.26 密度：N/A 沸点：N/A 熔点：N/A	1274457-95-2	C₁₀H₁₉NO₂
4-(4-Fluorophenyl)-1,2,3,6-tetrahydro-3-pyridinemethanol	4-(4-Fluorophenyl)-1,2,3,6-tetrahydro-3-pyridinemethanol	分子量：207.24 密度：N/A 沸点：N/A 熔点：N/A	220447-01-8	C₁₂H₁₄FNO
4-(Chloromethyl)-1,2,3-thiadiazole	4-(Chloromethyl)-1,2,3-thiadiazole	分子量：134.59 密度：N/A 沸点：N/A 熔点：N/A	147123-30-6	C₃H₃ClN₂S
(E)-2-(3,4-dimethoxyphenyl)-4-(furan-2-ylmethylene)oxazol-5(4H)-one	(E)-2-(3,4-dimethoxyphenyl)-4-(furan-2-ylmethylene)oxazol-5(4H)-one	分子量：299.28 密度：N/A 沸点：N/A 熔点：N/A	304863-41-0	C₁₆H₁₃NO₅