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-benzyl-N-(4-fluoro-2-methylphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(4-fluoro-2-methylphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：408.4 密度：N/A 沸点：N/A 熔点：N/A	1251630-07-5	C₂₂H₁₇FN₂O₃S
4-benzyl-N-(2-ethoxyphenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2-ethoxyphenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	1251572-25-4	C₂₃H₂₀N₂O₄S
4-benzyl-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	1251682-64-0	C₂₃H₁₈N₂O₅S
4-(Methylamino)adamantan-1-ol hydrochloride	4-(Methylamino)adamantan-1-ol hydrochloride	分子量：217.73 密度：N/A 沸点：N/A 熔点：N/A	1216613-68-1	C₁₁H₂₀ClNO
Methyl 5-((hydroxyimino)methyl)-2-methoxybenzoate	Methyl 5-((hydroxyimino)methyl)-2-methoxybenzoate	分子量：209.20 密度：N/A 沸点：N/A 熔点：N/A	191605-12-6	C₁₀H₁₁NO₄
4-benzyl-N-(2,5-dimethoxyphenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2,5-dimethoxyphenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	1251630-01-9	C₂₃H₂₀N₂O₅S
N-(2H-1,3-benzodioxol-5-yl)-4-benzyl-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	N-(2H-1,3-benzodioxol-5-yl)-4-benzyl-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：420.4 密度：N/A 沸点：N/A 熔点：N/A	1251596-33-4	C₂₂H₁₆N₂O₅S
4-benzyl-N-(2-cyanophenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2-cyanophenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：401.4 密度：N/A 沸点：N/A 熔点：N/A	1351800-86-6	C₂₂H₁₅N₃O₃S
4-benzyl-N-(3,4-dimethoxyphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(3,4-dimethoxyphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	1251622-86-2	C₂₃H₂₀N₂O₅S
4-benzyl-N-(2-fluorophenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2-fluorophenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	1351804-69-7	C₂₁H₁₅FN₂O₃S
4-benzyl-N-(3-fluorophenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(3-fluorophenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	1351834-20-2	C₂₁H₁₅FN₂O₃S
4-benzyl-7-hydroxy-N-(4-methoxy-2-methylphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-7-hydroxy-N-(4-methoxy-2-methylphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	1251688-24-0	C₂₃H₂₀N₂O₄S
4-benzyl-7-hydroxy-N-(3-methoxyphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-7-hydroxy-N-(3-methoxyphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	1351777-09-7	C₂₂H₁₈N₂O₄S
4-benzyl-N-(4-fluorophenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(4-fluorophenyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	1351821-07-2	C₂₁H₁₅FN₂O₃S
4-benzyl-7-hydroxy-N-(2-methylphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-7-hydroxy-N-(2-methylphenyl)-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：390.5 密度：N/A 沸点：N/A 熔点：N/A	1351777-15-5	C₂₂H₁₈N₂O₃S
4-benzyl-N-(2,4-dimethoxyphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(2,4-dimethoxyphenyl)-7-hydroxy-5-oxo-4H,5H-thieno[3,2-b]pyridine-6-carboxamide	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	1351804-77-7	C₂₃H₂₀N₂O₅S
N-(4-acetylphenyl)-4-benzyl-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	N-(4-acetylphenyl)-4-benzyl-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1351821-13-0	C₂₃H₁₈N₂O₄S
4-[(Phenylmethoxy)methyl]benzenemethanol	4-[(Phenylmethoxy)methyl]benzenemethanol	分子量：228.29 密度：N/A 沸点：N/A 熔点：N/A	934667-37-5	C₁₅H₁₆O₂
4-benzyl-N-(furan-2-ylmethyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	4-benzyl-N-(furan-2-ylmethyl)-7-hydroxy-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carboxamide	分子量：380.4 密度：N/A 沸点：N/A 熔点：N/A	1351808-88-2	C₂₀H₁₆N₂O₄S
4,4'-Bis(diphenylphosphoryl)biphenyl	4,4'-Bis(diphenylphosphoryl)biphenyl	分子量：554.6 密度：N/A 沸点：N/A 熔点：N/A	4129-45-7	C₃₆H₂₈O₂P₂
1-(3-Tert-butyl-5-ethyl-2-hydroxyphenyl)-2-methylpropan-1-one	1-(3-Tert-butyl-5-ethyl-2-hydroxyphenyl)-2-methylpropan-1-one	分子量：248.36 密度：N/A 沸点：N/A 熔点：N/A	1275301-36-4	C₁₆H₂₄O₂
2-Benzoyl-4-chloro-3,5-dimethylphenol	2-Benzoyl-4-chloro-3,5-dimethylphenol	分子量：260.71 密度：N/A 沸点：N/A 熔点：N/A	34174-02-2	C₁₅H₁₃ClO₂
N-(9,9-Dimethyl-9H-fluoren-2-yl)-9,9-dimethyl-N-1-naphthalenyl-9H-fluoren-2-amine	N-(9,9-Dimethyl-9H-fluoren-2-yl)-9,9-dimethyl-N-1-naphthalenyl-9H-fluoren-2-amine	分子量：527.7 密度：N/A 沸点：N/A 熔点：N/A	942615-37-4	C₄₀H₃₃N
5,5-Diethyl-4,5,6,7-tetrahydro-benzo[c]thiophene-1-carboxylic acid	5,5-Diethyl-4,5,6,7-tetrahydro-benzo[c]thiophene-1-carboxylic acid	分子量：238.35 密度：N/A 沸点：N/A 熔点：N/A	910635-54-0	C₁₃H₁₈O₂S
2,2-Dibromo-1-(4-ethoxyphenyl)ethanone	2,2-Dibromo-1-(4-ethoxyphenyl)ethanone	分子量：321.99 密度：N/A 沸点：N/A 熔点：N/A	516453-62-6	C₁₀H₁₀Br₂O₂
3-Aminofuro[3,2-b]pyridine-2-carboxamide	3-Aminofuro[3,2-b]pyridine-2-carboxamide	分子量：177.16 密度：N/A 沸点：N/A 熔点：N/A	917504-84-8	C₈H₇N₃O₂
1-Oxaspiro[4.5]decane-4-carboxylic acid	1-Oxaspiro[4.5]decane-4-carboxylic acid	分子量：184.23 密度：N/A 沸点：N/A 熔点：N/A	1779936-02-5	C₁₀H₁₆O₃
1-(3-Methoxy-5,5-dimethyl-4,5,6,7-tetrahydro-benzo[c]thiophen-1-yl)-ethanone	1-(3-Methoxy-5,5-dimethyl-4,5,6,7-tetrahydro-benzo[c]thiophen-1-yl)-ethanone	分子量：238.35 密度：N/A 沸点：N/A 熔点：N/A	910635-65-3	C₁₃H₁₈O₂S
2-(4-trifluoromethanesulfonyloxy-phenyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-carboxylic acid tert-butyl ester	2-(4-trifluoromethanesulfonyloxy-phenyl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-carboxylic acid tert-butyl ester	分子量：459.4 密度：N/A 沸点：N/A 熔点：N/A	949922-38-7	C₁₉H₂₀F₃N₃O₅S
2-bromo-N-tert-butylaniline	2-bromo-N-tert-butylaniline	分子量：228.13 密度：N/A 沸点：N/A 熔点：N/A	40686-71-3	C₁₀H₁₄BrN
N-{2-oxo-2-[(2Z)-1,3,4-thiadiazol-2(3H)-ylideneamino]ethyl}-4-phenylpiperazine-1-carboxamide	N-{2-oxo-2-[(2Z)-1,3,4-thiadiazol-2(3H)-ylideneamino]ethyl}-4-phenylpiperazine-1-carboxamide	分子量：346.4 密度：N/A 沸点：N/A 熔点：N/A	1246062-58-7	C₁₅H₁₈N₆O₂S
3-(Piperazin-1-yl)-L-Ala-OH	3-(Piperazin-1-yl)-L-Ala-OH	分子量：173.21 密度：N/A 沸点：N/A 熔点：N/A	1334582-48-7	C₇H₁₅N₃O₂
2-(4,6-dimethylpyrimidin-2-yl)sulfanyl-N-(4-oxo-4a,5,6,7,8,8a-hexahydro-1,3-benzothiazin-2-yl)acetamide	2-(4,6-dimethylpyrimidin-2-yl)sulfanyl-N-(4-oxo-4a,5,6,7,8,8a-hexahydro-1,3-benzothiazin-2-yl)acetamide	分子量：364.5 密度：N/A 沸点：N/A 熔点：N/A	489402-01-9	C₁₆H₂₀N₄O₂S₂
4-[4-(1H-indazol-3-yl)triazol-1-yl]-N-(2-methoxyethyl)benzamide	4-[4-(1H-indazol-3-yl)triazol-1-yl]-N-(2-methoxyethyl)benzamide	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	1383702-72-4	C₁₉H₁₈N₆O₂
3-[1-[3-(2-pyrrolidin-1-ylethyl)phenyl]triazol-4-yl]-1H-indazole	3-[1-[3-(2-pyrrolidin-1-ylethyl)phenyl]triazol-4-yl]-1H-indazole	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	1383703-03-4	C₂₁H₂₂N₆
methyl 2-[4-(trifluoromethyl)phenyl]-1H-imidazole-4-carboxylate	methyl 2-[4-(trifluoromethyl)phenyl]-1H-imidazole-4-carboxylate	分子量：270.21 密度：N/A 沸点：N/A 熔点：N/A	762286-20-4	C₁₂H₉F₃N₂O₂
1-(Pyridine-2-carbonyl)pyrrolidin-3-amine	1-(Pyridine-2-carbonyl)pyrrolidin-3-amine	分子量：191.23 密度：N/A 沸点：N/A 熔点：N/A	1249070-30-1	C₁₀H₁₃N₃O
7-Tert-butyl-1,2-dihydroisoquinolin-1-one	7-Tert-butyl-1,2-dihydroisoquinolin-1-one	分子量：201.26 密度：N/A 沸点：N/A 熔点：N/A	1511334-56-7	C₁₃H₁₅NO
2-(((tert-Butyldiphenylsilyl)oxy)methyl)thiazole-4-carbaldehyde	2-(((tert-Butyldiphenylsilyl)oxy)methyl)thiazole-4-carbaldehyde	分子量：381.6 密度：N/A 沸点：N/A 熔点：N/A	318471-44-2	C₂₁H₂₃NO₂SSi
tert-Butyl 5-formyl-1H-benzo[d]imidazole-1-carboxylate	tert-Butyl 5-formyl-1H-benzo[d]imidazole-1-carboxylate	分子量：246.26 密度：N/A 沸点：N/A 熔点：N/A	774239-53-1	C₁₃H₁₄N₂O₃
9-(2-isopropoxyethyl)-7,7-dimethyl-2-(morpholin-4-yl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one	9-(2-isopropoxyethyl)-7,7-dimethyl-2-(morpholin-4-yl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one	分子量：350.5 密度：N/A 沸点：N/A 熔点：N/A	1383777-83-0	C₁₈H₃₀N₄O₃
1-(6-Hydroxyquinazolin-2-yl)piperidine-4-carboxylic acid	1-(6-Hydroxyquinazolin-2-yl)piperidine-4-carboxylic acid	分子量：273.29 密度：N/A 沸点：N/A 熔点：N/A	1383379-53-0	C₁₄H₁₅N₃O₃
N-(1-benzylpiperidin-4-yl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	N-(1-benzylpiperidin-4-yl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1282099-28-8	C₂₃H₃₀N₄O₂
[4-(3-Chlorophenyl)piperazino](3,6-dimethylisoxazolo[5,4-b]pyridin-4-yl)methanone	[4-(3-Chlorophenyl)piperazino](3,6-dimethylisoxazolo[5,4-b]pyridin-4-yl)methanone	分子量：370.8 密度：N/A 沸点：N/A 熔点：N/A	1282112-63-3	C₁₉H₁₉ClN₄O₂
3-Triisopropylsilanoxy-benzyl alcohol	3-Triisopropylsilanoxy-benzyl alcohol	分子量：280.48 密度：N/A 沸点：N/A 熔点：N/A	925417-01-2	C₁₆H₂₈O₂Si
4-bromo-2-chloro-N-propylbenzamide	4-bromo-2-chloro-N-propylbenzamide	分子量：276.56 密度：N/A 沸点：N/A 熔点：N/A	1343089-29-1	C₁₀H₁₁BrClNO
N~4~-(2-fluorobenzyl)-6-isopropyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	N~4~-(2-fluorobenzyl)-6-isopropyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	分子量：340.4 密度：N/A 沸点：N/A 熔点：N/A	1282115-19-8	C₁₉H₂₁FN₄O
2-Chloro-1-methyl-6-oxo-pyridine-3-carboxylic acid	2-Chloro-1-methyl-6-oxo-pyridine-3-carboxylic acid	分子量：187.58 密度：N/A 沸点：N/A 熔点：N/A	1007571-57-4	C₇H₆ClNO₃
4'-[2-(2-Methyl-1-pyrrolidinyl)ethyl][1,1'-biphenyl]-4-sulfonamide	4'-[2-(2-Methyl-1-pyrrolidinyl)ethyl][1,1'-biphenyl]-4-sulfonamide	分子量：344.5 密度：N/A 沸点：N/A 熔点：N/A	1001332-57-5	C₁₉H₂₄N₂O₂S
6-(4-chlorophenyl)-2-[2-oxo-2-(thiomorpholin-4-yl)ethyl]pyridazin-3(2H)-one	6-(4-chlorophenyl)-2-[2-oxo-2-(thiomorpholin-4-yl)ethyl]pyridazin-3(2H)-one	分子量：349.8 密度：N/A 沸点：N/A 熔点：N/A	1282113-33-0	C₁₆H₁₆ClN₃O₂S