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-(3-Fluorophenyl)thiazol-5-amine	4-(3-Fluorophenyl)thiazol-5-amine	分子量：194.23 密度：N/A 沸点：N/A 熔点：N/A	1251055-15-8	C₉H₇FN₂S
5-amino-1-(3-chloro-2-methylphenyl)-1H-pyrazole-4-carbonitrile	5-amino-1-(3-chloro-2-methylphenyl)-1H-pyrazole-4-carbonitrile	分子量：232.67 密度：N/A 沸点：N/A 熔点：N/A	1207832-99-2	C₁₁H₉ClN₄
5H-[1,3]dioxolo[4,5-f]indole-7-carbonitrile	5H-[1,3]dioxolo[4,5-f]indole-7-carbonitrile	分子量：186.17 密度：N/A 沸点：N/A 熔点：N/A	876743-17-8	C₁₀H₆N₂O₂
Methyl 4-methoxymethylidene-cyclohexane carboxylate	Methyl 4-methoxymethylidene-cyclohexane carboxylate	分子量：184.23 密度：N/A 沸点：N/A 熔点：N/A	891828-63-0	C₁₀H₁₆O₃
(3S,5S)-3,5-dimethylcyclopentene	(3S,5S)-3,5-dimethylcyclopentene	分子量：96.17 密度：N/A 沸点：N/A 熔点：N/A	61394-27-2	C₇H₁₂
1-ethyl-2-(hydrazinylmethyl)-1H-imidazole	1-ethyl-2-(hydrazinylmethyl)-1H-imidazole	分子量：140.19 密度：N/A 沸点：N/A 熔点：N/A	1269483-38-6	C₆H₁₂N₄
2-[2-(4-bromophenyl)-2-oxoethyl]-6-(naphthalen-1-yl)pyridazin-3(2H)-one	2-[2-(4-bromophenyl)-2-oxoethyl]-6-(naphthalen-1-yl)pyridazin-3(2H)-one	分子量：419.3 密度：N/A 沸点：N/A 熔点：N/A	1224159-29-8	C₂₂H₁₅BrN₂O₂
1-[3-(4-methyl-1H-indol-1-yl)propanoyl]piperidine-4-carboxamide	1-[3-(4-methyl-1H-indol-1-yl)propanoyl]piperidine-4-carboxamide	分子量：313.4 密度：N/A 沸点：N/A 熔点：N/A	1224160-75-1	C₁₈H₂₃N₃O₂
N,N-Bis(carboxymethyl)glycine 1-methyl ester	N,N-Bis(carboxymethyl)glycine 1-methyl ester	分子量：205.17 密度：N/A 沸点：N/A 熔点：N/A	38841-92-8	C₇H₁₁NO₆
N-(3-methoxyphenyl)-2-[1-(1H-tetrazol-1-ylmethyl)cyclohexyl]acetamide	N-(3-methoxyphenyl)-2-[1-(1H-tetrazol-1-ylmethyl)cyclohexyl]acetamide	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	1224164-84-4	C₁₇H₂₃N₅O₂
2-(3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(furan-2-ylmethyl)acetamide	2-(3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(furan-2-ylmethyl)acetamide	分子量：357.3 密度：N/A 沸点：N/A 熔点：N/A	1232792-32-3	C₁₈H₁₆FN₃O₄
N-(3,4-dimethoxybenzyl)-2-[3-(4-fluorophenyl)-6-oxo-1(6H)-pyridazinyl]acetamide	N-(3,4-dimethoxybenzyl)-2-[3-(4-fluorophenyl)-6-oxo-1(6H)-pyridazinyl]acetamide	分子量：397.4 密度：N/A 沸点：N/A 熔点：N/A	1232797-66-8	C₂₁H₂₀FN₃O₄
6-(4-fluoro-2-methoxyphenyl)-2-[2-oxo-2-(4-phenylpiperazino)ethyl]-3(2H)-pyridazinone	6-(4-fluoro-2-methoxyphenyl)-2-[2-oxo-2-(4-phenylpiperazino)ethyl]-3(2H)-pyridazinone	分子量：422.5 密度：N/A 沸点：N/A 熔点：N/A	1232796-78-9	C₂₃H₂₃FN₄O₃
1-(5-Fluoropyridin-3-yl)cyclopentan-1-amine	1-(5-Fluoropyridin-3-yl)cyclopentan-1-amine	分子量：180.22 密度：N/A 沸点：N/A 熔点：N/A	944142-76-1	C₁₀H₁₃FN₂
N-(1-methyl-1H-indol-4-yl)-4-(4-oxoquinazolin-3(4H)-yl)butanamide	N-(1-methyl-1H-indol-4-yl)-4-(4-oxoquinazolin-3(4H)-yl)butanamide	分子量：360.4 密度：N/A 沸点：N/A 熔点：N/A	1282095-13-9	C₂₁H₂₀N₄O₂
N-[(6-oxo-3-phenylpyridazin-1(6H)-yl)acetyl]glycine	N-[(6-oxo-3-phenylpyridazin-1(6H)-yl)acetyl]glycine	分子量：287.27 密度：N/A 沸点：N/A 熔点：N/A	1246051-15-9	C₁₄H₁₃N₃O₄
2-(benzylamino)-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-1,3-thiazole-4-carboxamide	2-(benzylamino)-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-1,3-thiazole-4-carboxamide	分子量：359.5 密度：N/A 沸点：N/A 熔点：N/A	1232816-36-2	C₁₆H₁₇N₅OS₂
[2-[6-(3-Chlorophenyl)pyridin-3-yl]pyrrolidin-1-yl]-(5-methyl-1,2-oxazol-3-yl)methanone	[2-[6-(3-Chlorophenyl)pyridin-3-yl]pyrrolidin-1-yl]-(5-methyl-1,2-oxazol-3-yl)methanone	分子量：367.8 密度：N/A 沸点：N/A 熔点：N/A	1332336-34-1	C₂₀H₁₈ClN₃O₂
2-imidazol-1-yl-4-(5-pyridin-2-yl-1H-pyrazol-4-yl)pyridine	2-imidazol-1-yl-4-(5-pyridin-2-yl-1H-pyrazol-4-yl)pyridine	分子量：288.31 密度：N/A 沸点：N/A 熔点：N/A	1333492-53-7	C₁₆H₁₂N₆
6-(3-methoxyphenyl)-2-(2-oxo-2-phenylethyl)pyridazin-3(2H)-one	6-(3-methoxyphenyl)-2-(2-oxo-2-phenylethyl)pyridazin-3(2H)-one	分子量：320.3 密度：N/A 沸点：N/A 熔点：N/A	1224165-65-4	C₁₉H₁₆N₂O₃
3-Amino-3-(oxolan-2-yl)propan-1-ol	3-Amino-3-(oxolan-2-yl)propan-1-ol	分子量：145.20 密度：N/A 沸点：N/A 熔点：N/A	790227-32-6	C₇H₁₅NO₂
N-(3,4-dimethoxybenzyl)-6-((3,4-dimethylphenyl)sulfonyl)nicotinamide	N-(3,4-dimethoxybenzyl)-6-((3,4-dimethylphenyl)sulfonyl)nicotinamide	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	1286704-31-1	C₂₃H₂₄N₂O₅S
N-(3,4-dichlorophenyl)-4,5-dimethyl-2-(1H-tetrazol-1-yl)thiophene-3-carboxamide	N-(3,4-dichlorophenyl)-4,5-dimethyl-2-(1H-tetrazol-1-yl)thiophene-3-carboxamide	分子量：368.2 密度：N/A 沸点：N/A 熔点：N/A	1232790-78-1	C₁₄H₁₁Cl₂N₅OS
N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]-2-(4-methoxyphenyl)acetamide	N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]-2-(4-methoxyphenyl)acetamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	1232790-49-6	C₁₈H₁₉N₃O₃
N-(3-chloro-4-fluorobenzyl)-2-(3-morpholino-4-(o-tolyl)-1H-pyrazol-1-yl)acetamide	N-(3-chloro-4-fluorobenzyl)-2-(3-morpholino-4-(o-tolyl)-1H-pyrazol-1-yl)acetamide	分子量：442.9 密度：N/A 沸点：N/A 熔点：N/A	1286696-55-6	C₂₃H₂₄ClFN₄O₂
2-([1,2,4]triazolo[4,3-b]pyridazin-6-ylsulfanyl)-N-[3-(trifluoromethyl)phenyl]acetamide	2-([1,2,4]triazolo[4,3-b]pyridazin-6-ylsulfanyl)-N-[3-(trifluoromethyl)phenyl]acetamide	分子量：353.32 密度：N/A 沸点：N/A 熔点：N/A	1232787-10-8	C₁₄H₁₀F₃N₅OS
3-[[4-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-thiazolyl]amino]benzoic acid	3-[[4-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-thiazolyl]amino]benzoic acid	分子量：354.4 密度：N/A 沸点：N/A 熔点：N/A	1056050-79-3	C₁₈H₁₄N₂O₄S
Thiazolo[4,5-c]pyridine,4-(1-piperazinyl)-	Thiazolo[4,5-c]pyridine,4-(1-piperazinyl)-	分子量：220.30 密度：N/A 沸点：N/A 熔点：N/A	214045-75-7	C₁₀H₁₂N₄S
methyl 2-(2-(3-(dimethylamino)-4-phenyl-1H-pyrazol-1-yl)acetamido)benzoate	methyl 2-(2-(3-(dimethylamino)-4-phenyl-1H-pyrazol-1-yl)acetamido)benzoate	分子量：378.4 密度：N/A 沸点：N/A 熔点：N/A	1286699-81-7	C₂₁H₂₂N₄O₃
2-(3-(dimethylamino)-4-(4-methoxyphenyl)-1H-pyrazol-1-yl)-N-(4-(trifluoromethyl)benzyl)acetamide	2-(3-(dimethylamino)-4-(4-methoxyphenyl)-1H-pyrazol-1-yl)-N-(4-(trifluoromethyl)benzyl)acetamide	分子量：432.4 密度：N/A 沸点：N/A 熔点：N/A	1286725-37-8	C₂₂H₂₃F₃N₄O₂
N-(2,4-dimethoxyphenyl)-2-{4-methyl-3,5-dioxo-2H,3H,4H,5H,6H-pyridazino[4,5-b][1,4]thiazin-6-yl}acetamide	N-(2,4-dimethoxyphenyl)-2-{4-methyl-3,5-dioxo-2H,3H,4H,5H,6H-pyridazino[4,5-b][1,4]thiazin-6-yl}acetamide	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	1286706-27-1	C₁₇H₁₈N₄O₅S
N-benzyl-3-[9-(4-fluorophenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3-yl]propanamide	N-benzyl-3-[9-(4-fluorophenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3-yl]propanamide	分子量：414.4 密度：N/A 沸点：N/A 熔点：N/A	1358895-13-2	C₂₃H₁₉FN₆O
1,3-Dimethyl-1H-pyrazolo[4,3-b]pyridine	1,3-Dimethyl-1H-pyrazolo[4,3-b]pyridine	分子量：147.18 密度：N/A 沸点：N/A 熔点：N/A	1781625-47-5	C₈H₉N₃
(5-Nitrobenzo[d]oxazol-2-yl)methanol	(5-Nitrobenzo[d]oxazol-2-yl)methanol	分子量：194.14 密度：N/A 沸点：N/A 熔点：N/A	948306-35-2	C₈H₆N₂O₄
1H-1,2,4-Triazole-3-ethanamine, 5-(3-aminophenyl)-N-(4-bromophenyl)-	1H-1,2,4-Triazole-3-ethanamine, 5-(3-aminophenyl)-N-(4-bromophenyl)-	分子量：358.24 密度：N/A 沸点：N/A 熔点：N/A	1329835-23-5	C₁₆H₁₆BrN₅
2-[2-Aminoethoxy(hydroxy)phosphoryl]oxyacetic acid	2-[2-Aminoethoxy(hydroxy)phosphoryl]oxyacetic acid	分子量：199.10 密度：N/A 沸点：N/A 熔点：N/A	162224-06-8	C₄H₁₀NO₆P
2-Tert-butyl-1-methoxy-4-nitrobenzene	2-Tert-butyl-1-methoxy-4-nitrobenzene	分子量：209.24 密度：N/A 沸点：N/A 熔点：N/A	15353-20-5	C₁₁H₁₅NO₃
7-methoxy-N-methyl-1-benzofuran-2-carboxamide	7-methoxy-N-methyl-1-benzofuran-2-carboxamide	分子量：205.21 密度：N/A 沸点：N/A 熔点：N/A	1311000-80-2	C₁₁H₁₁NO₃
Methyl 3-(4-hydroxyphenyl)-3-(1h-pyrrol-1-yl)propanoate	Methyl 3-(4-hydroxyphenyl)-3-(1h-pyrrol-1-yl)propanoate	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	865233-87-0	C₁₄H₁₅NO₃
5-amino-1-(2-chloro-4-fluorophenyl)-1H-pyrazole-4-carbonitrile	5-amino-1-(2-chloro-4-fluorophenyl)-1H-pyrazole-4-carbonitrile	分子量：236.63 密度：N/A 沸点：N/A 熔点：N/A	1159678-22-4	C₁₀H₆ClFN₄
3-(4-Hydroxy-phenyl)-hex-4-ynoic acid ethyl ester	3-(4-Hydroxy-phenyl)-hex-4-ynoic acid ethyl ester	分子量：232.27 密度：N/A 沸点：N/A 熔点：N/A	865233-41-6	C₁₄H₁₆O₃
(1S,3R)-N-[4-(1,3-benzoxazol-2-yl)phenyl]-N-methyl-3-propanamidocyclopentane-1-carboxamide	(1S,3R)-N-[4-(1,3-benzoxazol-2-yl)phenyl]-N-methyl-3-propanamidocyclopentane-1-carboxamide	分子量：391.5 密度：N/A 沸点：N/A 熔点：N/A	1338468-86-2	C₂₃H₂₅N₃O₃
tert-Butyl 4-(pyrazine-2-carboxamido)piperidine-1-carboxylate	tert-Butyl 4-(pyrazine-2-carboxamido)piperidine-1-carboxylate	分子量：306.36 密度：N/A 沸点：N/A 熔点：N/A	1317244-80-6	C₁₅H₂₂N₄O₃
Methyl 3-(methylamino)-2-(trifluoromethyl)isonicotinate	Methyl 3-(methylamino)-2-(trifluoromethyl)isonicotinate	分子量：234.17 密度：N/A 沸点：N/A 熔点：N/A	1034132-08-5	C₉H₉F₃N₂O₂
Butanamide, N-[3-amino-1-(fluoromethyl)propyl]-	Butanamide, N-[3-amino-1-(fluoromethyl)propyl]-	分子量：176.23 密度：N/A 沸点：N/A 熔点：N/A	1379317-17-5	C₈H₁₇FN₂O
Diethyl 2-(cyclopropylmethylene)malonate	Diethyl 2-(cyclopropylmethylene)malonate	分子量：212.24 密度：N/A 沸点：N/A 熔点：N/A	39000-53-8	C₁₁H₁₆O₄
2-(3-Hydroxy-3-methyl-butoxy)-isoindole-1,3-dione	2-(3-Hydroxy-3-methyl-butoxy)-isoindole-1,3-dione	分子量：249.26 密度：N/A 沸点：N/A 熔点：N/A	1009334-93-3	C₁₃H₁₅NO₄
2-Amino-4-methylhexan-1-ol	2-Amino-4-methylhexan-1-ol	分子量：131.22 密度：N/A 沸点：N/A 熔点：N/A	1315059-53-0	C₇H₁₇NO
8-Cyano-4-hydroxyquinoline-3-carbohydrazide	8-Cyano-4-hydroxyquinoline-3-carbohydrazide	分子量：228.21 密度：N/A 沸点：N/A 熔点：N/A	1329610-13-0	C₁₁H₈N₄O₂
Ethyl 5-methyl-1-[3-(trifluoromethyl)phenyl]pyrazole-4-carboxylate	Ethyl 5-methyl-1-[3-(trifluoromethyl)phenyl]pyrazole-4-carboxylate	分子量：298.26 密度：N/A 沸点：N/A 熔点：N/A	187998-58-9	C₁₄H₁₃F₃N₂O₂