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-(4-Ethoxyphenyl)-2-(3-hydroxypropyl)-4,7,8-trimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	6-(4-Ethoxyphenyl)-2-(3-hydroxypropyl)-4,7,8-trimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	876901-89-2	C₂₁H₂₇N₅O₄
4,6,7-trimethyl-2-(naphthalen-1-ylmethyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	4,6,7-trimethyl-2-(naphthalen-1-ylmethyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：374.4 密度：N/A 沸点：N/A 熔点：N/A	876902-07-7	C₂₁H₂₀N₅O₂+
6-ethyl-2-(3-hydroxypropyl)-4,7-dimethyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	6-ethyl-2-(3-hydroxypropyl)-4,7-dimethyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：306.34 密度：N/A 沸点：N/A 熔点：N/A	876902-23-7	C₁₄H₂₀N₅O₃+
4,7-dimethyl-2-(2-methylprop-2-enyl)-6-propyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	4,7-dimethyl-2-(2-methylprop-2-enyl)-6-propyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：316.38 密度：N/A 沸点：N/A 熔点：N/A	876902-24-8	C₁₆H₂₂N₅O₂+
6-(2-methoxyethyl)-4,7-dimethyl-2-(2-methylprop-2-enyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	6-(2-methoxyethyl)-4,7-dimethyl-2-(2-methylprop-2-enyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：332.38 密度：N/A 沸点：N/A 熔点：N/A	876902-33-9	C₁₆H₂₂N₅O₃+
2-[(2,4-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	2-[(2,4-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：438.3 密度：N/A 沸点：N/A 熔点：N/A	876902-34-0	C₁₉H₂₁Cl₂N₅O₃
2-[(2,6-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	2-[(2,6-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：438.3 密度：N/A 沸点：N/A 熔点：N/A	876902-35-1	C₁₉H₂₁Cl₂N₅O₃
2-[(3,4-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	2-[(3,4-Dichlorophenyl)methyl]-6-(2-methoxyethyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：438.3 密度：N/A 沸点：N/A 熔点：N/A	876902-36-2	C₁₉H₂₁Cl₂N₅O₃
6-(2-Methoxyethyl)-4,7-dimethyl-2-(3-phenylpropyl)-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	6-(2-Methoxyethyl)-4,7-dimethyl-2-(3-phenylpropyl)-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：397.5 密度：N/A 沸点：N/A 熔点：N/A	876902-37-3	C₂₁H₂₇N₅O₃
2-(3-hydroxypropyl)-6-(2-methoxyethyl)-4,7-dimethyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	2-(3-hydroxypropyl)-6-(2-methoxyethyl)-4,7-dimethyl-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：336.37 密度：N/A 沸点：N/A 熔点：N/A	876902-38-4	C₁₅H₂₂N₅O₄+
6-(3-methoxypropyl)-4,7-dimethyl-2-(2-methylprop-2-enyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	6-(3-methoxypropyl)-4,7-dimethyl-2-(2-methylprop-2-enyl)-9aH-purino[7,8-a]imidazol-9-ium-1,3-dione	分子量：346.4 密度：N/A 沸点：N/A 熔点：N/A	876902-39-5	C₁₇H₂₄N₅O₃+
2-[(2-Chloro-6-fluorophenyl)methyl]-6-(3-methoxypropyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	2-[(2-Chloro-6-fluorophenyl)methyl]-6-(3-methoxypropyl)-4,7-dimethyl-4a,9a-dihydropurino[7,8-a]imidazole-1,3-dione	分子量：435.9 密度：N/A 沸点：N/A 熔点：N/A	876902-40-8	C₂₀H₂₃ClFN₅O₃
L-Seryl-L-seryl-N~5~-(diaminomethylidene)-L-ornithyl-L-cysteinyl-L-seryl-L-seryl-L-seryl-L-serine	L-Seryl-L-seryl-N~5~-(diaminomethylidene)-L-ornithyl-L-cysteinyl-L-seryl-L-seryl-L-seryl-L-serine	分子量：799.8 密度：N/A 沸点：N/A 熔点：N/A	919282-55-6	C₂₇H₄₉N₁₁O₁₅S
2-[4-(2-Fluorophenyl)piperazin-1-yl]-6-methyl-5-methylidenepyrimidin-4-one	2-[4-(2-Fluorophenyl)piperazin-1-yl]-6-methyl-5-methylidenepyrimidin-4-one	分子量：300.33 密度：N/A 沸点：N/A 熔点：N/A	876667-32-2	C₁₆H₁₇FN₄O
2-[(4,6-Dimethylquinazolin-2-yl)amino]-6-[(4-methylpyrimidin-2-yl)sulfanylmethyl]-1,3-diazinan-4-one	2-[(4,6-Dimethylquinazolin-2-yl)amino]-6-[(4-methylpyrimidin-2-yl)sulfanylmethyl]-1,3-diazinan-4-one	分子量：409.5 密度：N/A 沸点：N/A 熔点：N/A	876667-50-4	C₂₀H₂₃N₇OS
2-[(4,7-Dimethylquinazolin-2-yl)amino]-6-(4-methoxyphenyl)-1,3-diazinan-4-one	2-[(4,7-Dimethylquinazolin-2-yl)amino]-6-(4-methoxyphenyl)-1,3-diazinan-4-one	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	876667-55-9	C₂₁H₂₃N₅O₂
2-[(6-Methoxy-4-methylquinazolin-2-yl)amino]-6-propan-2-yl-1,3-diazinan-4-one	2-[(6-Methoxy-4-methylquinazolin-2-yl)amino]-6-propan-2-yl-1,3-diazinan-4-one	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	876667-58-2	C₁₇H₂₃N₅O₂
2-(1,3-Benzoxazol-2-ylamino)-6-propan-2-yl-1,3-diazinan-4-one	2-(1,3-Benzoxazol-2-ylamino)-6-propan-2-yl-1,3-diazinan-4-one	分子量：274.32 密度：N/A 沸点：N/A 熔点：N/A	876667-98-0	C₁₄H₁₈N₄O₂
6-[(5-Methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	6-[(5-Methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	分子量：375.5 密度：N/A 沸点：N/A 熔点：N/A	876668-07-4	C₁₆H₁₇N₅O₂S₂
6-[(4-Methylpyrimidin-2-yl)sulfanylmethyl]-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	6-[(4-Methylpyrimidin-2-yl)sulfanylmethyl]-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	分子量：369.4 密度：N/A 沸点：N/A 熔点：N/A	876668-09-6	C₁₈H₁₉N₅O₂S
5-Chloro-6-methyl-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	5-Chloro-6-methyl-2-phenyl-1,3a,5,6,7,7a-hexahydropyrazolo[3,4-b]pyridine-3,4-dione	分子量：279.72 密度：N/A 沸点：N/A 熔点：N/A	876668-11-0	C₁₃H₁₄ClN₃O₂
2-(1,3-Benzothiazol-2-ylamino)-6-propan-2-yl-1,3-diazinan-4-one	2-(1,3-Benzothiazol-2-ylamino)-6-propan-2-yl-1,3-diazinan-4-one	分子量：290.39 密度：N/A 沸点：N/A 熔点：N/A	876668-15-4	C₁₄H₁₈N₄OS
2-[4-(2-Fluorophenyl)piperazin-1-yl]-6-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-1,3-diazinan-4-one	2-[4-(2-Fluorophenyl)piperazin-1-yl]-6-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-1,3-diazinan-4-one	分子量：422.5 密度：N/A 沸点：N/A 熔点：N/A	876668-16-5	C₁₈H₂₃FN₆OS₂
2-[4-(1,3-Benzodioxol-5-ylmethyl)piperazin-1-yl]-6-(4-methoxyphenyl)-1,3-diazinan-4-one	2-[4-(1,3-Benzodioxol-5-ylmethyl)piperazin-1-yl]-6-(4-methoxyphenyl)-1,3-diazinan-4-one	分子量：424.5 密度：N/A 沸点：N/A 熔点：N/A	876668-28-9	C₂₃H₂₈N₄O₄
L-Seryl-L-histidyl-L-leucyl-L-glutaminyl-L-lysyl-L-tyrosyl-N~5~-(diaminomethylidene)-L-ornithyl-L-leucine	L-Seryl-L-histidyl-L-leucyl-L-glutaminyl-L-lysyl-L-tyrosyl-N~5~-(diaminomethylidene)-L-ornithyl-L-leucine	分子量：1044.2 密度：N/A 沸点：N/A 熔点：N/A	918825-97-5	C₄₇H₇₇N₁₅O₁₂
1-(3-Chloro-4-methoxyphenyl)-3-(1,1-dimethylethyl)-1H-pyrazol-5-amine	1-(3-Chloro-4-methoxyphenyl)-3-(1,1-dimethylethyl)-1H-pyrazol-5-amine	分子量：279.76 密度：N/A 沸点：N/A 熔点：N/A	876299-99-9	C₁₄H₁₈ClN₃O
2-(2-Aminopropyl)-4-bromophenol	2-(2-Aminopropyl)-4-bromophenol	分子量：230.10 密度：N/A 沸点：N/A 熔点：N/A	477514-54-8	C₉H₁₂BrNO
4,7,8-Trichloro-6-methylquinoline	4,7,8-Trichloro-6-methylquinoline	分子量：246.5 密度：N/A 沸点：N/A 熔点：N/A	1422497-89-9	C₁₀H₆Cl₃N
(2R,3R,4S,5R)-2-(6-((2-(Benzo[d]thiazol-2-ylamino)ethyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol	(2R,3R,4S,5R)-2-(6-((2-(Benzo[d]thiazol-2-ylamino)ethyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol	分子量：443.5 密度：N/A 沸点：N/A 熔点：N/A	143354-79-4	C₁₉H₂₁N₇O₄S
tert-butyl N-[2-amino-3-(1-benzothiophen-3-yl)propyl]carbamate	tert-butyl N-[2-amino-3-(1-benzothiophen-3-yl)propyl]carbamate	分子量：306.4 密度：N/A 沸点：N/A 熔点：N/A	2008561-74-6	C₁₆H₂₂N₂O₂S
2-ethoxy-N-(piperidin-4-ylmethyl)benzamide hydrochloride	2-ethoxy-N-(piperidin-4-ylmethyl)benzamide hydrochloride	分子量：298.81 密度：N/A 沸点：N/A 熔点：N/A	1638612-82-4	C₁₅H₂₃ClN₂O₂
3-Methyl-3-(3-phenyl-1,2,4-oxadiazol-5-yl)piperidine hydrochloride	3-Methyl-3-(3-phenyl-1,2,4-oxadiazol-5-yl)piperidine hydrochloride	分子量：279.76 密度：N/A 沸点：N/A 熔点：N/A	1956307-81-5	C₁₄H₁₈ClN₃O
2,5-dimethyl-2H-1,2,6-thiadiazine-4-carboxylic acid 1,1-dioxide-ethanamine (1:1)	2,5-dimethyl-2H-1,2,6-thiadiazine-4-carboxylic acid 1,1-dioxide-ethanamine (1:1)	分子量：249.29 密度：N/A 沸点：N/A 熔点：N/A	1993057-97-8	C₈H₁₅N₃O₄S
4-tert-butyl-N-(piperidin-4-ylmethyl)benzamide hydrochloride	4-tert-butyl-N-(piperidin-4-ylmethyl)benzamide hydrochloride	分子量：310.9 密度：N/A 沸点：N/A 熔点：N/A	1589446-11-6	C₁₇H₂₇ClN₂O
({1-[(4-Ethoxyphenyl)acetyl]piperidin-4-yl}methyl)amine hydrochloride	({1-[(4-Ethoxyphenyl)acetyl]piperidin-4-yl}methyl)amine hydrochloride	分子量：312.83 密度：N/A 沸点：N/A 熔点：N/A	1573035-08-1	C₁₆H₂₅ClN₂O₂
{[1-(2,4-Dichlorobenzoyl)piperidin-4-yl]methyl}amine hydrochloride	{[1-(2,4-Dichlorobenzoyl)piperidin-4-yl]methyl}amine hydrochloride	分子量：323.6 密度：N/A 沸点：N/A 熔点：N/A	1585925-22-9	C₁₃H₁₇Cl₃N₂O
2-amino-N-(3-cyanophenyl)acetamide hydrochloride	2-amino-N-(3-cyanophenyl)acetamide hydrochloride	分子量：211.65 密度：N/A 沸点：N/A 熔点：N/A	1403958-54-2	C₉H₁₀ClN₃O
1-benzyl-4-hydroxy-1,6-naphthyridin-2(1H)-one	1-benzyl-4-hydroxy-1,6-naphthyridin-2(1H)-one	分子量：252.27 密度：N/A 沸点：N/A 熔点：N/A	1422496-29-4	C₁₅H₁₂N₂O₂
Cis-methyl 2-(furan-2-yl)-4-oxocyclohexanecarboxylate	Cis-methyl 2-(furan-2-yl)-4-oxocyclohexanecarboxylate	分子量：222.24 密度：N/A 沸点：N/A 熔点：N/A	137703-54-9	C₁₂H₁₄O₄
1-(2,3-Dichlorophenyl)pyrazole-4-carboxylic acid	1-(2,3-Dichlorophenyl)pyrazole-4-carboxylic acid	分子量：257.07 密度：N/A 沸点：N/A 熔点：N/A	1369344-14-8	C₁₀H₆Cl₂N₂O₂
ethyl 1-(3-chloro-2-fluorophenyl)-5-methyl-1H-pyrazole-4-carboxylate	ethyl 1-(3-chloro-2-fluorophenyl)-5-methyl-1H-pyrazole-4-carboxylate	分子量：282.70 密度：N/A 沸点：N/A 熔点：N/A	1422386-21-7	C₁₃H₁₂ClFN₂O₂
1-(5-Chloro-2-methoxyphenyl)-5-methylpyrazole-4-carboxylic acid	1-(5-Chloro-2-methoxyphenyl)-5-methylpyrazole-4-carboxylic acid	分子量：266.68 密度：N/A 沸点：N/A 熔点：N/A	1226363-56-9	C₁₂H₁₁ClN₂O₃
(R)-2-Acetamido-3-((2-amino-4-(5-nitrofuran-2-yl)thiazol-5-yl)thio)propanoic acid	(R)-2-Acetamido-3-((2-amino-4-(5-nitrofuran-2-yl)thiazol-5-yl)thio)propanoic acid	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	113790-27-5	C₁₂H₁₂N₄O₆S₂
Ethyl 5-amino-1-(3-chloro-2-fluorophenyl)-1H-pyrazole-4-carboxylate	Ethyl 5-amino-1-(3-chloro-2-fluorophenyl)-1H-pyrazole-4-carboxylate	分子量：283.68 密度：N/A 沸点：N/A 熔点：N/A	1422385-89-4	C₁₂H₁₁ClFN₃O₂
2-chloro-N-[1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-oxopyrimidin-4-yl]acetamide	2-chloro-N-[1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-oxopyrimidin-4-yl]acetamide	分子量：319.70 密度：N/A 沸点：N/A 熔点：N/A	113737-50-1	C₁₁H₁₄ClN₃O₆
ethyl 1-(3-chloro-2-fluorophenyl)-4-methyl-1H-imidazole-5-carboxylate	ethyl 1-(3-chloro-2-fluorophenyl)-4-methyl-1H-imidazole-5-carboxylate	分子量：282.70 密度：N/A 沸点：N/A 熔点：N/A	1422386-13-7	C₁₃H₁₂ClFN₂O₂
5-Amino-1-(3-chloro-2-fluorophenyl)-1H-pyrazole-4-carboxylic acid	5-Amino-1-(3-chloro-2-fluorophenyl)-1H-pyrazole-4-carboxylic acid	分子量：255.63 密度：N/A 沸点：N/A 熔点：N/A	1422385-90-7	C₁₀H₇ClFN₃O₂
L-Argininamide, 1-acetyl-L-prolyl-N-(4-nitrophenyl)-	L-Argininamide, 1-acetyl-L-prolyl-N-(4-nitrophenyl)-	分子量：433.5 密度：N/A 沸点：N/A 熔点：N/A	103418-62-8	C₁₉H₂₇N₇O₅
6-Bromo-3-{6-[4-(4-fluorophenyl)piperazin-1-yl]-6-oxohexyl}-2-sulfanylidene-1,2,3,4-tetrahydroquinazolin-4-one	6-Bromo-3-{6-[4-(4-fluorophenyl)piperazin-1-yl]-6-oxohexyl}-2-sulfanylidene-1,2,3,4-tetrahydroquinazolin-4-one	分子量：533.5 密度：N/A 沸点：N/A 熔点：N/A	422288-45-7	C₂₄H₂₆BrFN₄O₂S
N-[(2-chlorophenyl)methyl]-4-{[(2-sulfanylidene-1,2-dihydroquinazolin-4-yl)amino]methyl}cyclohexane-1-carboxamide	N-[(2-chlorophenyl)methyl]-4-{[(2-sulfanylidene-1,2-dihydroquinazolin-4-yl)amino]methyl}cyclohexane-1-carboxamide	分子量：449.1 密度：N/A 沸点：N/A 熔点：N/A	689265-92-7	C₂₃H₃₃ClN₄OS