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
1h-Imidazo[4,5-b]pyridine-2-carboxylic acid,5,7-bis(4-fluorophenyl)-1-methyl-6-(4-pyridinyl)-,ethyl ester	1h-Imidazo[4,5-b]pyridine-2-carboxylic acid,5,7-bis(4-fluorophenyl)-1-methyl-6-(4-pyridinyl)-,ethyl ester	分子量：470.5 密度：N/A 沸点：N/A 熔点：N/A	875757-21-4	C₂₇H₂₀F₂N₄O₂
methyl 2-methyl-3,4-dihydro-1(2H)-quinolinecarboxylate	methyl 2-methyl-3,4-dihydro-1(2H)-quinolinecarboxylate	分子量：205.25 密度：N/A 沸点：N/A 熔点：N/A	94567-79-0	C₁₂H₁₅NO₂
Carbamic acid, (phenylsulfonyl)-, 2-methyl-2-propenyl ester	Carbamic acid, (phenylsulfonyl)-, 2-methyl-2-propenyl ester	分子量：255.29 密度：N/A 沸点：N/A 熔点：N/A	95602-05-4	C₁₁H₁₃NO₄S
4-(1H-benzimidazol-1-ylsulfonyl)-1-naphthyl methyl ether	4-(1H-benzimidazol-1-ylsulfonyl)-1-naphthyl methyl ether	分子量：338.4 密度：N/A 沸点：N/A 熔点：N/A	457960-37-1	C₁₈H₁₄N₂O₃S
Ethyl 3-methylenecyclopentanecarboxylate	Ethyl 3-methylenecyclopentanecarboxylate	分子量：154.21 密度：N/A 沸点：N/A 熔点：N/A	1287746-48-8	C₉H₁₄O₂
6-(3-Bromo-4,5-diethoxyphenyl)-3-(methylsulfanyl)-6,7-dihydro[1,2,4]triazino[5,6-d][3,1]benzoxazepine	6-(3-Bromo-4,5-diethoxyphenyl)-3-(methylsulfanyl)-6,7-dihydro[1,2,4]triazino[5,6-d][3,1]benzoxazepine	分子量：489.4 密度：N/A 沸点：N/A 熔点：N/A	442642-41-3	C₂₁H₂₁BrN₄O₃S
2-chloro-3-(3-(furan-2-yl)-1-(methylsulfonyl)-4,5-dihydro-1H-pyrazol-5-yl)-6,7-dimethoxyquinoline	2-chloro-3-(3-(furan-2-yl)-1-(methylsulfonyl)-4,5-dihydro-1H-pyrazol-5-yl)-6,7-dimethoxyquinoline	分子量：435.9 密度：N/A 沸点：N/A 熔点：N/A	864925-17-7	C₁₉H₁₈ClN₃O₅S
3-allyl-4-oxo-N-(pyridin-3-ylmethyl)-2-thioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	3-allyl-4-oxo-N-(pyridin-3-ylmethyl)-2-thioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	分子量：352.4 密度：N/A 沸点：N/A 熔点：N/A	421590-81-0	C₁₈H₁₆N₄O₂S
7-Methyl-7-phenylbicyclo[4.1.0]heptane	7-Methyl-7-phenylbicyclo[4.1.0]heptane	分子量：186.29 密度：N/A 沸点：N/A 熔点：N/A	17547-14-7	C₁₄H₁₈
2-(1,2,3,4-Tetrahydronaphthalen-1-yl)pyrrolidine	2-(1,2,3,4-Tetrahydronaphthalen-1-yl)pyrrolidine	分子量：201.31 密度：N/A 沸点：N/A 熔点：N/A	95092-06-1	C₁₄H₁₉N
N-(4-chlorophenethyl)-3-(4-methoxybenzyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	N-(4-chlorophenethyl)-3-(4-methoxybenzyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	分子量：463.9 密度：N/A 沸点：N/A 熔点：N/A	892275-10-4	C₂₅H₂₂ClN₃O₄
4-(6-bromo-2,4-dioxo-1,2-dihydroquinazolin-3(4H)-yl)-N-(4-chlorophenethyl)butanamide	4-(6-bromo-2,4-dioxo-1,2-dihydroquinazolin-3(4H)-yl)-N-(4-chlorophenethyl)butanamide	分子量：464.7 密度：N/A 沸点：N/A 熔点：N/A	892285-60-8	C₂₀H₁₉BrClN₃O₃
N-(3,5-dimethoxyphenyl)-3-(2-methoxyethyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	N-(3,5-dimethoxyphenyl)-3-(2-methoxyethyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	931722-21-3	C₂₀H₂₁N₃O₆
2-(2,4-dioxo-3-(3,4,5-trimethoxyphenyl)-3,4-dihydroquinazolin-1(2H)-yl)-N-(2-methoxyphenyl)acetamide	2-(2,4-dioxo-3-(3,4,5-trimethoxyphenyl)-3,4-dihydroquinazolin-1(2H)-yl)-N-(2-methoxyphenyl)acetamide	分子量：491.5 密度：N/A 沸点：N/A 熔点：N/A	892266-99-8	C₂₆H₂₅N₃O₇
1-(3-methylbenzyl)-3-(p-tolyl)quinazoline-2,4(1H,3H)-dione	1-(3-methylbenzyl)-3-(p-tolyl)quinazoline-2,4(1H,3H)-dione	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	899782-52-6	C₂₃H₂₀N₂O₂
1-(2-methylbenzyl)-3-(p-tolyl)quinazoline-2,4(1H,3H)-dione	1-(2-methylbenzyl)-3-(p-tolyl)quinazoline-2,4(1H,3H)-dione	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	899782-01-5	C₂₃H₂₀N₂O₂
3-(3,4-dimethoxyphenyl)-1-(2-fluorobenzyl)quinazoline-2,4(1H,3H)-dione	3-(3,4-dimethoxyphenyl)-1-(2-fluorobenzyl)quinazoline-2,4(1H,3H)-dione	分子量：406.4 密度：N/A 沸点：N/A 熔点：N/A	899922-33-9	C₂₃H₁₉FN₂O₄
3,6-dichloro-N-(2-propoxyphenyl)pyridine-2-carboxamide	3,6-dichloro-N-(2-propoxyphenyl)pyridine-2-carboxamide	分子量：325.2 密度：N/A 沸点：N/A 熔点：N/A	930986-63-3	C₁₅H₁₄Cl₂N₂O₂
2-{[5,6-dimethyl-2,4-dioxo-3-(2-phenylethyl)-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-1-yl]methyl}benzonitrile	2-{[5,6-dimethyl-2,4-dioxo-3-(2-phenylethyl)-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-1-yl]methyl}benzonitrile	分子量：415.5 密度：N/A 沸点：N/A 熔点：N/A	689740-99-6	C₂₄H₂₁N₃O₂S
2-{2,4-dioxo-1-[(phenylcarbamoyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidin-3-yl}-N-[(furan-2-yl)methyl]acetamide	2-{2,4-dioxo-1-[(phenylcarbamoyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidin-3-yl}-N-[(furan-2-yl)methyl]acetamide	分子量：438.5 密度：N/A 沸点：N/A 熔点：N/A	912887-57-1	C₂₁H₁₈N₄O₅S
5-bromo-N-(2,5-dimethoxyphenyl)-3-methyl-1-benzofuran-2-carboxamide	5-bromo-N-(2,5-dimethoxyphenyl)-3-methyl-1-benzofuran-2-carboxamide	分子量：390.2 密度：N/A 沸点：N/A 熔点：N/A	912906-38-8	C₁₈H₁₆BrNO₄
5-{[(3-Chlorophenyl)methyl]sulfanyl}-8,9-dimethoxy-2-methyl-[1,2,4]triazolo[1,5-C]quinazoline	5-{[(3-Chlorophenyl)methyl]sulfanyl}-8,9-dimethoxy-2-methyl-[1,2,4]triazolo[1,5-C]quinazoline	分子量：400.9 密度：N/A 沸点：N/A 熔点：N/A	901755-66-6	C₁₉H₁₇ClN₄O₂S
N-(2-chlorobenzyl)-2-((8,9-dimethoxy-2-methyl-[1,2,4]triazolo[1,5-c]quinazolin-5-yl)thio)acetamide	N-(2-chlorobenzyl)-2-((8,9-dimethoxy-2-methyl-[1,2,4]triazolo[1,5-c]quinazolin-5-yl)thio)acetamide	分子量：457.9 密度：N/A 沸点：N/A 熔点：N/A	901755-70-2	C₂₁H₂₀ClN₅O₃S
3-(2-methoxyethyl)-2,4-dioxo-N-(4-phenoxyphenyl)-1,2,3,4-tetrahydroquinazoline-7-carboxamide	3-(2-methoxyethyl)-2,4-dioxo-N-(4-phenoxyphenyl)-1,2,3,4-tetrahydroquinazoline-7-carboxamide	分子量：431.4 密度：N/A 沸点：N/A 熔点：N/A	892260-26-3	C₂₄H₂₁N₃O₅
8-(1-Bromoethyl)quinoline	8-(1-Bromoethyl)quinoline	分子量：236.11 密度：N/A 沸点：N/A 熔点：N/A	60333-51-9	C₁₁H₁₀BrN
3-(3-methoxypropyl)-2,11-dimethyl-8-nitro-2,3,5,6-tetrahydro-4H-2,6-methano-1,3,5-benzoxadiazocine-4-thione	3-(3-methoxypropyl)-2,11-dimethyl-8-nitro-2,3,5,6-tetrahydro-4H-2,6-methano-1,3,5-benzoxadiazocine-4-thione	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	1005114-28-2	C₁₆H₂₁N₃O₄S
2-Azido-1-(2,4-dichlorophenyl)ethanone	2-Azido-1-(2,4-dichlorophenyl)ethanone	分子量：230.05 密度：N/A 沸点：N/A 熔点：N/A	249639-89-2	C₈H₅Cl₂N₃O
8-bromo-3-(2-methoxy-5-methylphenyl)-2-methyl-5,6-dihydro-2H-2,6-methanobenzo[g][1,3,5]oxadiazocin-4(3H)-one	8-bromo-3-(2-methoxy-5-methylphenyl)-2-methyl-5,6-dihydro-2H-2,6-methanobenzo[g][1,3,5]oxadiazocin-4(3H)-one	分子量：403.3 密度：N/A 沸点：N/A 熔点：N/A	688343-37-5	C₁₉H₁₉BrN₂O₃
5-Acetamido-2-bromo-4-fluorobenzenesulfonic acid	5-Acetamido-2-bromo-4-fluorobenzenesulfonic acid	分子量：312.11 密度：N/A 沸点：N/A 熔点：N/A	97803-30-0	C₈H₇BrFNO₄S
2,4-Imidazolidinedione, 5-methyl-1-(4-quinolinylmethyl)-3-[4-[(trifluoromethyl)sulfonyl]phenyl]-, (5S)-	2,4-Imidazolidinedione, 5-methyl-1-(4-quinolinylmethyl)-3-[4-[(trifluoromethyl)sulfonyl]phenyl]-, (5S)-	分子量：463.4 密度：N/A 沸点：N/A 熔点：N/A	733807-17-5	C₂₁H₁₆F₃N₃O₄S
4-(Aminomethyl)-3-methoxybenzonitrile hydrochloride	4-(Aminomethyl)-3-methoxybenzonitrile hydrochloride	分子量：198.65 密度：N/A 沸点：N/A 熔点：N/A	182291-98-1	C₉H₁₁ClN₂O
2-(2-Amino-2-methylpropyl)-4-methylphenol	2-(2-Amino-2-methylpropyl)-4-methylphenol	分子量：179.26 密度：N/A 沸点：N/A 熔点：N/A	75445-46-4	C₁₁H₁₇NO
2-(1-(4-(1-methyl-4-(pyridin-4-yl)-1H-pyrazol-3-yl)phenoxy)ethyl)quinoline	2-(1-(4-(1-methyl-4-(pyridin-4-yl)-1H-pyrazol-3-yl)phenoxy)ethyl)quinoline	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	898564-28-8	C₂₆H₂₂N₄O
2-[5-(4-Aminophenyl)-4-methyl-1,3-thiazol-2-yl]guanidine	2-[5-(4-Aminophenyl)-4-methyl-1,3-thiazol-2-yl]guanidine	分子量：247.32 密度：N/A 沸点：N/A 熔点：N/A	793653-35-7	C₁₁H₁₃N₅S
N-(2-(1H-indol-3-yl)ethyl)-3-(benzo[d][1,3]dioxol-5-yloxy)propane-1-sulfonamide	N-(2-(1H-indol-3-yl)ethyl)-3-(benzo[d][1,3]dioxol-5-yloxy)propane-1-sulfonamide	分子量：402.5 密度：N/A 沸点：N/A 熔点：N/A	946214-23-9	C₂₀H₂₂N₂O₅S
5-(3-Isocyanatophenyl)-1h-1,2,3,4-tetrazole	5-(3-Isocyanatophenyl)-1h-1,2,3,4-tetrazole	分子量：187.16 密度：N/A 沸点：N/A 熔点：N/A	170856-35-6	C₈H₅N₅O
4-fluoro-N-(2-(6-(isopropylthio)-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)benzamide	4-fluoro-N-(2-(6-(isopropylthio)-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)benzamide	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	941897-21-8	C₂₁H₂₅FN₆OS
(3S)-tetradecane-1,3-diol	(3S)-tetradecane-1,3-diol	分子量：230.39 密度：N/A 沸点：N/A 熔点：N/A	110971-16-9	C₁₄H₃₀O₂
Ethyl 4-oxo-5-(2-propen-1-yloxy)-4H-1-benzopyran-2-carboxylate	Ethyl 4-oxo-5-(2-propen-1-yloxy)-4H-1-benzopyran-2-carboxylate	分子量：274.27 密度：N/A 沸点：N/A 熔点：N/A	23226-85-9	C₁₅H₁₄O₅
N-(4-chlorobenzyl)-2-{[3-(4-methylbenzyl)-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide	N-(4-chlorobenzyl)-2-{[3-(4-methylbenzyl)-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide	分子量：470.0 密度：N/A 沸点：N/A 熔点：N/A	894241-63-5	C₂₃H₂₀ClN₃O₂S₂
N-(4-chlorobenzyl)-2-{[3-(4-chlorophenyl)-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide	N-(4-chlorobenzyl)-2-{[3-(4-chlorophenyl)-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide	分子量：476.4 密度：N/A 沸点：N/A 熔点：N/A	894242-60-5	C₂₁H₁₅Cl₂N₃O₂S₂
N-[(4-chlorophenyl)methyl]-2-({3-[(2-chlorophenyl)methyl]-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-2-yl}sulfanyl)acetamide	N-[(4-chlorophenyl)methyl]-2-({3-[(2-chlorophenyl)methyl]-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-2-yl}sulfanyl)acetamide	分子量：490.4 密度：N/A 沸点：N/A 熔点：N/A	894243-65-3	C₂₂H₁₇Cl₂N₃O₂S₂
N-(3-Chlorophenyl)piperidine-4-carboxamide	N-(3-Chlorophenyl)piperidine-4-carboxamide	分子量：238.71 密度：N/A 沸点：N/A 熔点：N/A	1579822-78-8	C₁₂H₁₅ClN₂O
N-(3,5-dimethylphenyl)-2-[(2-ethylphenyl)amino]-5-oxo-5H-[1,3,4]thiadiazolo[2,3-b]quinazoline-8-carboxamide	N-(3,5-dimethylphenyl)-2-[(2-ethylphenyl)amino]-5-oxo-5H-[1,3,4]thiadiazolo[2,3-b]quinazoline-8-carboxamide	分子量：469.6 密度：N/A 沸点：N/A 熔点：N/A	894248-33-0	C₂₆H₂₃N₅O₂S
N-(2-Methoxy-5-methylphenyl)pyrrolidine-2-carboxamide	N-(2-Methoxy-5-methylphenyl)pyrrolidine-2-carboxamide	分子量：234.29 密度：N/A 沸点：N/A 熔点：N/A	1103923-58-5	C₁₃H₁₈N₂O₂
2-(4-fluorophenyl)-N-(2-(6-(isopropylthio)-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)acetamide	2-(4-fluorophenyl)-N-(2-(6-(isopropylthio)-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)acetamide	分子量：442.6 密度：N/A 沸点：N/A 熔点：N/A	946211-54-7	C₂₂H₂₇FN₆OS
7-Mesityl-2-methyl-1H-indene	7-Mesityl-2-methyl-1H-indene	分子量：248.4 密度：N/A 沸点：N/A 熔点：N/A	880653-07-6	C₁₉H₂₀
5-chloro-N-(4-chlorobenzo[d]thiazol-2-yl)-N-(2-(dimethylamino)ethyl)thiophene-2-carboxamide hydrochloride	5-chloro-N-(4-chlorobenzo[d]thiazol-2-yl)-N-(2-(dimethylamino)ethyl)thiophene-2-carboxamide hydrochloride	分子量：436.8 密度：N/A 沸点：N/A 熔点：N/A	1216638-30-0	C₁₆H₁₆Cl₃N₃OS₂
3-(sec-Butyl)quinoxalin-2(1H)-one	3-(sec-Butyl)quinoxalin-2(1H)-one	分子量：202.25 密度：N/A 沸点：N/A 熔点：N/A	85896-65-7	C₁₂H₁₄N₂O
2-(4-Chlorophenyl)-7,8-dihydro-7,7-dimethyl-5(6H)-quinazolinone	2-(4-Chlorophenyl)-7,8-dihydro-7,7-dimethyl-5(6H)-quinazolinone	分子量：286.75 密度：N/A 沸点：N/A 熔点：N/A	302899-36-1	C₁₆H₁₅ClN₂O