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-acetyl-N-(3-methylpyridin-2-yl)azetidine-3-carboxamide	1-acetyl-N-(3-methylpyridin-2-yl)azetidine-3-carboxamide	分子量：233.27 密度：N/A 沸点：N/A 熔点：N/A	1421444-86-1	C₁₂H₁₅N₃O₂
2-Amino-2-(3-bromo-5-fluorophenyl)acetic acid	2-Amino-2-(3-bromo-5-fluorophenyl)acetic acid	分子量：248.05 密度：N/A 沸点：N/A 熔点：N/A	1270322-24-1	C₈H₇BrFNO₂
3-Methyl-7-(2-phenylethyl)-8-(4-propanoylpiperazin-1-yl)-4,5-dihydropurine-2,6-dione	3-Methyl-7-(2-phenylethyl)-8-(4-propanoylpiperazin-1-yl)-4,5-dihydropurine-2,6-dione	分子量：412.5 密度：N/A 沸点：N/A 熔点：N/A	1363942-07-7	C₂₁H₂₈N₆O₃
(Z)-N-[2-(Prop-2-enoylamino)ethyl]-3-[3-(trifluoromethyl)phenyl]but-2-enamide	(Z)-N-[2-(Prop-2-enoylamino)ethyl]-3-[3-(trifluoromethyl)phenyl]but-2-enamide	分子量：326.31 密度：N/A 沸点：N/A 熔点：N/A	1436370-19-2	C₁₆H₁₇F₃N₂O₂
N-(2-methoxyethyl)-1,5-dioxa-9-azaspiro[5.5]undecane-9-carboxamide	N-(2-methoxyethyl)-1,5-dioxa-9-azaspiro[5.5]undecane-9-carboxamide	分子量：258.31 密度：N/A 沸点：N/A 熔点：N/A	1351613-15-4	C₁₂H₂₂N₂O₄
(2-Chlorophenyl)(4-(pyridazin-3-yloxy)piperidin-1-yl)methanone	(2-Chlorophenyl)(4-(pyridazin-3-yloxy)piperidin-1-yl)methanone	分子量：317.77 密度：N/A 沸点：N/A 熔点：N/A	1448057-11-1	C₁₆H₁₆ClN₃O₂
N-(2,2-dimethoxyethyl)-1-(pyrazine-2-carbonyl)azetidine-3-carboxamide	N-(2,2-dimethoxyethyl)-1-(pyrazine-2-carbonyl)azetidine-3-carboxamide	分子量：294.31 密度：N/A 沸点：N/A 熔点：N/A	1396865-67-0	C₁₃H₁₈N₄O₄
5-cyclopropyl-N-phenethyl-N-(pyridin-2-ylmethyl)isoxazole-3-carboxamide	5-cyclopropyl-N-phenethyl-N-(pyridin-2-ylmethyl)isoxazole-3-carboxamide	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	1396858-86-8	C₂₁H₂₁N₃O₂
3-(4-fluorophenyl)-N-[(1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl]-1-methyl-1H-pyrazole-5-carboxamide	3-(4-fluorophenyl)-N-[(1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl]-1-methyl-1H-pyrazole-5-carboxamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1396782-87-8	C₂₁H₂₀FN₃O₂
(E)-N-((1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl)-2-(p-tolyl)ethenesulfonamide	(E)-N-((1-hydroxy-2,3-dihydro-1H-inden-1-yl)methyl)-2-(p-tolyl)ethenesulfonamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1396891-33-0	C₁₉H₂₁NO₃S
N-(2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl)-4-(1,1-dioxido-1,2-thiazinan-2-yl)benzenesulfonamide	N-(2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl)-4-(1,1-dioxido-1,2-thiazinan-2-yl)benzenesulfonamide	分子量：412.5 密度：N/A 沸点：N/A 熔点：N/A	1396683-56-9	C₁₇H₂₄N₄O₄S₂
2-(4-Methyl-3-nitrophenyl)pyrrolidine	2-(4-Methyl-3-nitrophenyl)pyrrolidine	分子量：206.24 密度：N/A 沸点：N/A 熔点：N/A	1270336-01-0	C₁₁H₁₄N₂O₂
7-[(3-chlorophenyl)methyl]-1-(2-ethoxyethyl)-3,9-dimethyl-5a,9a,10,10a-tetrahydro-4H-purino[8,7-c][1,2,4]triazine-6,8-dione	7-[(3-chlorophenyl)methyl]-1-(2-ethoxyethyl)-3,9-dimethyl-5a,9a,10,10a-tetrahydro-4H-purino[8,7-c][1,2,4]triazine-6,8-dione	分子量：434.9 密度：N/A 沸点：N/A 熔点：N/A	919007-93-5	C₂₀H₂₇ClN₆O₃
N-((1-cyclopentyl-5-(pyridin-4-yl)-1H-pyrazol-3-yl)methyl)-5-oxo-1-(p-tolyl)pyrrolidine-3-carboxamide	N-((1-cyclopentyl-5-(pyridin-4-yl)-1H-pyrazol-3-yl)methyl)-5-oxo-1-(p-tolyl)pyrrolidine-3-carboxamide	分子量：443.5 密度：N/A 沸点：N/A 熔点：N/A	1421501-54-3	C₂₆H₂₉N₅O₂
2-amino-3-[(2S)-oxolan-2-yl]propanoic acid	2-amino-3-[(2S)-oxolan-2-yl]propanoic acid	分子量：159.18 密度：N/A 沸点：N/A 熔点：N/A	2155161-51-4	C₇H₁₃NO₃
4-(5-Bromo-4-methylpyridin-3-yl)oxan-4-ol	4-(5-Bromo-4-methylpyridin-3-yl)oxan-4-ol	分子量：272.14 密度：N/A 沸点：N/A 熔点：N/A	1438859-42-7	C₁₁H₁₄BrNO₂
1-chloro-N-[(1-ethylpyrrolidin-2-yl)methyl]-N-methylmethanesulfonamide	1-chloro-N-[(1-ethylpyrrolidin-2-yl)methyl]-N-methylmethanesulfonamide	分子量：254.78 密度：N/A 沸点：N/A 熔点：N/A	1520565-64-3	C₉H₁₉ClN₂O₂S
rel-(2R,4S,6S)-4-Chlorotetrahydro-6-(1-naphthalenyl)-2H-pyran-2-carboxylic acid	rel-(2R,4S,6S)-4-Chlorotetrahydro-6-(1-naphthalenyl)-2H-pyran-2-carboxylic acid	分子量：290.74 密度：N/A 沸点：N/A 熔点：N/A	1416450-58-2	C₁₆H₁₅ClO₃
1-(2,2-difluoroethyl)-3-iodo-1H-1,2,4-triazole	1-(2,2-difluoroethyl)-3-iodo-1H-1,2,4-triazole	分子量：259.00 密度：N/A 沸点：N/A 熔点：N/A	1538297-93-6	C₄H₄F₂IN₃
4-Cyclopropoxy-5-(dimethylamino)picolinic acid	4-Cyclopropoxy-5-(dimethylamino)picolinic acid	分子量：222.24 密度：N/A 沸点：N/A 熔点：N/A	1243472-83-4	C₁₁H₁₄N₂O₃
4-Cyclopropoxy-2-formylbenzamide	4-Cyclopropoxy-2-formylbenzamide	分子量：205.21 密度：N/A 沸点：N/A 熔点：N/A	1243316-38-2	C₁₁H₁₁NO₃
Ethyl 2-No u degrees ECa(2) cent>>.Ii paragraph signthornI(c)-1-carboxylate	Ethyl 2-No u degrees ECa(2) cent>>.Ii paragraph signthornI(c)-1-carboxylate	分子量：196.24 密度：N/A 沸点：N/A 熔点：N/A	91085-03-9	C₁₁H₁₆O₃
4-(Dimethylamino)-3-(methylthio)phenol	4-(Dimethylamino)-3-(methylthio)phenol	分子量：183.27 密度：N/A 沸点：N/A 熔点：N/A	1243380-67-7	C₉H₁₃NOS
1-(3-fluorophenyl)-N-((4-methyl-2-(thiophen-2-yl)thiazol-5-yl)methyl)-5-oxopyrrolidine-3-carboxamide	1-(3-fluorophenyl)-N-((4-methyl-2-(thiophen-2-yl)thiazol-5-yl)methyl)-5-oxopyrrolidine-3-carboxamide	分子量：415.5 密度：N/A 沸点：N/A 熔点：N/A	1421464-95-0	C₂₀H₁₈FN₃O₂S₂
N-[5-(4-fluorobenzyl)-1H-1,2,4-triazol-3-yl]-5-(pyridin-3-yl)-1H-pyrazole-3-carboxamide	N-[5-(4-fluorobenzyl)-1H-1,2,4-triazol-3-yl]-5-(pyridin-3-yl)-1H-pyrazole-3-carboxamide	分子量：363.3 密度：N/A 沸点：N/A 熔点：N/A	1489255-89-1	C₁₈H₁₄FN₇O
N-(1H-benzimidazol-2-ylmethyl)-5-(4-methoxyphenyl)-2-methylpyrazole-3-carboxamide	N-(1H-benzimidazol-2-ylmethyl)-5-(4-methoxyphenyl)-2-methylpyrazole-3-carboxamide	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1574337-44-2	C₂₀H₁₉N₅O₂
methyl N-(4-aminophenyl)-N-(methylsulfonyl)glycinate	methyl N-(4-aminophenyl)-N-(methylsulfonyl)glycinate	分子量：258.30 密度：N/A 沸点：N/A 熔点：N/A	1573548-39-6	C₁₀H₁₄N₂O₄S
N-(1-{2-[4-(3-chlorophenyl)piperazino]-2-oxoethyl}-1H-indol-4-yl)acetamide	N-(1-{2-[4-(3-chlorophenyl)piperazino]-2-oxoethyl}-1H-indol-4-yl)acetamide	分子量：410.9 密度：N/A 沸点：N/A 熔点：N/A	1574480-50-4	C₂₂H₂₃ClN₄O₂
3-amino-N-(benzo[d]thiazol-2-yl)propanamide hydrochloride	3-amino-N-(benzo[d]thiazol-2-yl)propanamide hydrochloride	分子量：257.74 密度：N/A 沸点：N/A 熔点：N/A	1573547-33-7	C₁₀H₁₂ClN₃OS
Methyl I+/--cyano-3,4-dimethylbenzeneacetate	Methyl I+/--cyano-3,4-dimethylbenzeneacetate	分子量：203.24 密度：N/A 沸点：N/A 熔点：N/A	153742-14-4	C₁₂H₁₃NO₂
1-Chloro-4,5-difluoro-2-(fluoromethyl)benzene	1-Chloro-4,5-difluoro-2-(fluoromethyl)benzene	分子量：180.55 密度：N/A 沸点：N/A 熔点：N/A	1805645-77-5	C₇H₄ClF₃
2,5-Dichloro-4-(cyclohexylmethoxy)pyrimidine	2,5-Dichloro-4-(cyclohexylmethoxy)pyrimidine	分子量：261.14 密度：N/A 沸点：N/A 熔点：N/A	1509000-62-7	C₁₁H₁₄Cl₂N₂O
N-(6-fluoro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)-2-phenoxyacetamide	N-(6-fluoro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)-2-phenoxyacetamide	分子量：338.4 密度：N/A 沸点：N/A 熔点：N/A	1574494-39-5	C₂₀H₁₉FN₂O₂
4,7-dimethoxy-N-[3-(4H-1,2,4-triazol-3-yl)phenyl]-1H-indole-2-carboxamide	4,7-dimethoxy-N-[3-(4H-1,2,4-triazol-3-yl)phenyl]-1H-indole-2-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1574484-67-5	C₁₉H₁₇N₅O₃
N-[2-(1H-1,3-benzimidazol-2-yl)ethyl]-3-(6-chloro-1H-indol-1-yl)propanamide	N-[2-(1H-1,3-benzimidazol-2-yl)ethyl]-3-(6-chloro-1H-indol-1-yl)propanamide	分子量：366.8 密度：N/A 沸点：N/A 熔点：N/A	1574471-08-1	C₂₀H₁₉ClN₄O
6-(2-Methylphenyl)-1,3-diazinane-2,4-dione	6-(2-Methylphenyl)-1,3-diazinane-2,4-dione	分子量：204.22 密度：N/A 沸点：N/A 熔点：N/A	861324-98-3	C₁₁H₁₂N₂O₂
3-Azetidinecarboxylic acid, 1-[(2R)-2-amino-1-oxobutyl]-	3-Azetidinecarboxylic acid, 1-[(2R)-2-amino-1-oxobutyl]-	分子量：186.21 密度：N/A 沸点：N/A 熔点：N/A	1568041-74-6	C₈H₁₄N₂O₃
7-[(2-Fluorophenyl)methyl]-3-methyl-8-(4-methylpiperidin-1-yl)-4,5-dihydropurine-2,6-dione	7-[(2-Fluorophenyl)methyl]-3-methyl-8-(4-methylpiperidin-1-yl)-4,5-dihydropurine-2,6-dione	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	673493-88-4	C₁₉H₂₄FN₅O₂
N-(3,5-dichlorophenyl)-2-[[4-(4-methoxyphenyl)-6-oxo-1,3-diazinan-2-yl]sulfanyl]acetamide	N-(3,5-dichlorophenyl)-2-[[4-(4-methoxyphenyl)-6-oxo-1,3-diazinan-2-yl]sulfanyl]acetamide	分子量：440.3 密度：N/A 沸点：N/A 熔点：N/A	674362-13-1	C₁₉H₁₉Cl₂N₃O₃S
2-(2-chlorophenyl)-N-((4-methyl-2-(o-tolyl)thiazol-5-yl)methyl)acetamide	2-(2-chlorophenyl)-N-((4-methyl-2-(o-tolyl)thiazol-5-yl)methyl)acetamide	分子量：370.9 密度：N/A 沸点：N/A 熔点：N/A	1448054-95-2	C₂₀H₁₉ClN₂OS
1-((4-Methyl-2-(o-tolyl)thiazol-5-yl)methyl)-3-(thiophen-2-yl)urea	1-((4-Methyl-2-(o-tolyl)thiazol-5-yl)methyl)-3-(thiophen-2-yl)urea	分子量：343.5 密度：N/A 沸点：N/A 熔点：N/A	1448130-57-1	C₁₇H₁₇N₃OS₂
7-[2-(1,3-benzothiazol-2-ylsulfanyl)ethyl]-1,3-dimethyl-8-(1,2,3,4-tetrahydroisoquinolin-2-yl)-2,3,6,7-tetrahydro-1H-purine-2,6-dione	7-[2-(1,3-benzothiazol-2-ylsulfanyl)ethyl]-1,3-dimethyl-8-(1,2,3,4-tetrahydroisoquinolin-2-yl)-2,3,6,7-tetrahydro-1H-purine-2,6-dione	分子量：506.6 密度：N/A 沸点：N/A 熔点：N/A	674294-97-4	C₂₅H₂₆N₆O₂S₂
(2S)-2-pyridin-4-ylpropan-1-ol	(2S)-2-pyridin-4-ylpropan-1-ol	分子量：137.18 密度：N/A 沸点：N/A 熔点：N/A	2248183-09-5	C₈H₁₁NO
N-((1-(benzo[d]thiazol-2-yl)piperidin-4-yl)methyl)-3-chloro-4-fluorobenzenesulfonamide	N-((1-(benzo[d]thiazol-2-yl)piperidin-4-yl)methyl)-3-chloro-4-fluorobenzenesulfonamide	分子量：440.0 密度：N/A 沸点：N/A 熔点：N/A	1797724-79-8	C₁₉H₁₉ClFN₃O₂S₂
N-(isoxazol-4-yl)-3-(phenylsulfonyl)propanamide	N-(isoxazol-4-yl)-3-(phenylsulfonyl)propanamide	分子量：280.30 密度：N/A 沸点：N/A 熔点：N/A	1396867-88-1	C₁₂H₁₂N₂O₄S
1-(3-(Benzo[d]thiazol-2-yloxy)azetidin-1-yl)-3-((4-methoxyphenyl)sulfonyl)propan-1-one	1-(3-(Benzo[d]thiazol-2-yloxy)azetidin-1-yl)-3-((4-methoxyphenyl)sulfonyl)propan-1-one	分子量：432.5 密度：N/A 沸点：N/A 熔点：N/A	1421525-22-5	C₂₀H₂₀N₂O₅S₂
2-(1-Aminoethyl)-4,6-difluorophenol	2-(1-Aminoethyl)-4,6-difluorophenol	分子量：173.16 密度：N/A 沸点：N/A 熔点：N/A	1337351-71-9	C₈H₉F₂NO
3-Cyclopropoxy-N2,N2,N4,N4-tetramethylpyridine-2,4-dicarboxamide	3-Cyclopropoxy-N2,N2,N4,N4-tetramethylpyridine-2,4-dicarboxamide	分子量：277.32 密度：N/A 沸点：N/A 熔点：N/A	1243381-95-4	C₁₄H₁₉N₃O₃
3-(2,3-dihydro-1H-inden-2-yl)butanoic acid	3-(2,3-dihydro-1H-inden-2-yl)butanoic acid	分子量：204.26 密度：N/A 沸点：N/A 熔点：N/A	2228412-62-0	C₁₃H₁₆O₂
5-Tert-butyl-4-cyclopropoxy-2-ethylpyridine	5-Tert-butyl-4-cyclopropoxy-2-ethylpyridine	分子量：219.32 密度：N/A 沸点：N/A 熔点：N/A	1243368-55-9	C₁₄H₂₁NO