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-(2-chlorobenzyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1H-pyrazol-5-ol	4-(2-chlorobenzyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1H-pyrazol-5-ol	分子量：340.8 密度：N/A 沸点：N/A 熔点：N/A	1282105-69-4	C₁₅H₁₇ClN₂O₃S
N~1~-(1,5-dimethylhexyl)-2-[3-(2-furyl)-6-oxo-1(6H)-pyridazinyl]acetamide	N~1~-(1,5-dimethylhexyl)-2-[3-(2-furyl)-6-oxo-1(6H)-pyridazinyl]acetamide	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	1282113-85-2	C₁₈H₂₅N₃O₃
Thiophene-3-ol, 4-(3,4-dihydro-2(1H)-isoquinolinyl)tetrahydro-, 1,1-dioxide	Thiophene-3-ol, 4-(3,4-dihydro-2(1H)-isoquinolinyl)tetrahydro-, 1,1-dioxide	分子量：267.35 密度：N/A 沸点：N/A 熔点：N/A	1216225-53-4	C₁₃H₁₇NO₃S
N-[(2Z)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-3-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)propanamide	N-[(2Z)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-3-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)propanamide	分子量：423.5 密度：N/A 沸点：N/A 熔点：N/A	1282119-92-9	C₂₁H₂₁N₅O₃S
1-(5-Methoxyethoxy-pyridin-3-yl)-4-methyl-homopiperazine	1-(5-Methoxyethoxy-pyridin-3-yl)-4-methyl-homopiperazine	分子量：265.35 密度：N/A 沸点：N/A 熔点：N/A	223797-42-0	C₁₄H₂₃N₃O₂
2-(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)-N-(4-phenylbutan-2-yl)acetamide	2-(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)-N-(4-phenylbutan-2-yl)acetamide	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	1282105-89-8	C₂₂H₂₅N₃O₄
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(naphthalen-1-ylmethyl)-1H-pyrazol-5-ol	1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(naphthalen-1-ylmethyl)-1H-pyrazol-5-ol	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	1282106-55-1	C₁₉H₂₀N₂O₃S
(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)(1-methyl-1H-indol-3-yl)methanone	(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)(1-methyl-1H-indol-3-yl)methanone	分子量：361.5 密度：N/A 沸点：N/A 熔点：N/A	1282098-34-3	C₁₈H₂₃N₃O₃S
4-Amino-2-chlorobenzene-1-sulfonyl chloride	4-Amino-2-chlorobenzene-1-sulfonyl chloride	分子量：226.08 密度：N/A 沸点：N/A 熔点：N/A	1261619-24-2	C₆H₅Cl₂NO₂S
4-[4-oxo-2-(propan-2-yl)-1,4-dihydroquinazolin-3(2H)-yl]-N-(1,3-thiazol-2-yl)butanamide	4-[4-oxo-2-(propan-2-yl)-1,4-dihydroquinazolin-3(2H)-yl]-N-(1,3-thiazol-2-yl)butanamide	分子量：358.5 密度：N/A 沸点：N/A 熔点：N/A	1282133-98-5	C₁₈H₂₂N₄O₂S
N-(6-methoxypyridin-3-yl)-2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)acetamide	N-(6-methoxypyridin-3-yl)-2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)acetamide	分子量：388.4 密度：N/A 沸点：N/A 熔点：N/A	1282100-90-6	C₂₂H₂₀N₄O₃
2-(3-fluorophenyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide	2-(3-fluorophenyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	1282130-11-3	C₁₆H₁₇FN₄O₃S
N-(2-hydroxyphenyl)-3-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]propanamide	N-(2-hydroxyphenyl)-3-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]propanamide	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1282100-94-0	C₂₀H₂₃N₃O₃
6-(2-chlorophenyl)-2-[2-oxo-2-(2-phenylmorpholin-4-yl)ethyl]pyridazin-3(2H)-one	6-(2-chlorophenyl)-2-[2-oxo-2-(2-phenylmorpholin-4-yl)ethyl]pyridazin-3(2H)-one	分子量：409.9 密度：N/A 沸点：N/A 熔点：N/A	1282110-03-5	C₂₂H₂₀ClN₃O₃
N-(1H-indol-5-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide	N-(1H-indol-5-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	1282106-93-7	C₂₁H₂₂N₄O₂
2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-phenylbutan-2-yl)acetamide	2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-phenylbutan-2-yl)acetamide	分子量：395.9 密度：N/A 沸点：N/A 熔点：N/A	1282101-56-7	C₂₂H₂₂ClN₃O₂
N-(1H-indol-6-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide	N-(1H-indol-6-yl)-2-[2-isopropyl-4-oxo-1,4-dihydro-3(2H)-quinazolinyl]acetamide	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	1282115-76-7	C₂₁H₂₂N₄O₂
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(thiophen-2-yl)pyridazin-3(2H)-one	2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(thiophen-2-yl)pyridazin-3(2H)-one	分子量：422.5 密度：N/A 沸点：N/A 熔点：N/A	1282123-69-6	C₁₈H₂₂N₄O₄S₂
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-phenylpyridazin-3(2H)-one	2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-phenylpyridazin-3(2H)-one	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	1282095-32-2	C₂₀H₂₄N₄O₄S
2-(2,3-dimethoxyphenyl)-N-(1H-indol-5-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide	2-(2,3-dimethoxyphenyl)-N-(1H-indol-5-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide	分子量：393.4 密度：N/A 沸点：N/A 熔点：N/A	1282115-77-8	C₂₂H₂₃N₃O₄
(4-chloro-2-(1H-tetrazol-1-yl)phenyl)(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)methanone	(4-chloro-2-(1H-tetrazol-1-yl)phenyl)(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)methanone	分子量：410.9 密度：N/A 沸点：N/A 熔点：N/A	1282121-78-1	C₁₆H₁₉ClN₆O₃S
3-(3,4-dimethoxyphenyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazol-5-ol	3-(3,4-dimethoxyphenyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazol-5-ol	分子量：338.4 密度：N/A 沸点：N/A 熔点：N/A	1282113-97-6	C₁₅H₁₈N₂O₅S
6-[4-(methylsulfanyl)phenyl]-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone	6-[4-(methylsulfanyl)phenyl]-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	1282095-48-0	C₂₃H₂₃N₃O₃S
2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one	2-(2-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	1282117-72-9	C₂₀H₂₃FN₄O₄S
1-{[3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid	1-{[3-(furan-2-yl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid	分子量：331.32 密度：N/A 沸点：N/A 熔点：N/A	1282140-41-3	C₁₆H₁₇N₃O₅
2-(6-bromo-1H-indol-1-yl)-1-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)ethanone	2-(6-bromo-1H-indol-1-yl)-1-(4-(1,1-dioxidotetrahydrothiophen-3-yl)piperazin-1-yl)ethanone	分子量：440.4 密度：N/A 沸点：N/A 熔点：N/A	1282121-90-7	C₁₈H₂₂BrN₃O₃S
methyl 5-(4-methoxyphenyl)-2-methyl-4-(2-oxo-2,3-dihydro-1H-indol-3-yl)-1H-pyrrole-3-carboxylate	methyl 5-(4-methoxyphenyl)-2-methyl-4-(2-oxo-2,3-dihydro-1H-indol-3-yl)-1H-pyrrole-3-carboxylate	分子量：376.4 密度：N/A 沸点：N/A 熔点：N/A	1282121-92-9	C₂₂H₂₀N₂O₄
2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]-N-(6-methoxypyridin-3-yl)acetamide	2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]-N-(6-methoxypyridin-3-yl)acetamide	分子量：418.4 密度：N/A 沸点：N/A 熔点：N/A	1282102-47-9	C₂₃H₂₂N₄O₄
N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-5-oxo-1-phenylpyrrolidine-3-carboxamide	N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-5-oxo-1-phenylpyrrolidine-3-carboxamide	分子量：369.5 密度：N/A 沸点：N/A 熔点：N/A	1282101-81-8	C₂₁H₂₇N₃O₃
2-[2-oxo-2-(2-phenylmorpholino)ethyl]-5,6,7,8-tetrahydro-3(2H)-cinnolinone	2-[2-oxo-2-(2-phenylmorpholino)ethyl]-5,6,7,8-tetrahydro-3(2H)-cinnolinone	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1282126-08-2	C₂₀H₂₃N₃O₃
N-(2-hydroxyphenyl)-2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]acetamide	N-(2-hydroxyphenyl)-2-[2-(4-methoxyphenyl)-4-oxo-1,4-dihydroquinazolin-3(2H)-yl]acetamide	分子量：403.4 密度：N/A 沸点：N/A 熔点：N/A	1282110-18-2	C₂₃H₂₁N₃O₄
2-(2,3-dimethoxyphenyl)-N-(1H-indol-6-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide	2-(2,3-dimethoxyphenyl)-N-(1H-indol-6-yl)-1-methyl-5-oxopyrrolidine-3-carboxamide	分子量：393.4 密度：N/A 沸点：N/A 熔点：N/A	1282124-93-9	C₂₂H₂₃N₃O₄
1-(4-bromophenyl)-N-(5-cyclobutyl-1,3,4-thiadiazol-2-yl)-5-oxopyrrolidine-3-carboxamide	1-(4-bromophenyl)-N-(5-cyclobutyl-1,3,4-thiadiazol-2-yl)-5-oxopyrrolidine-3-carboxamide	分子量：421.3 密度：N/A 沸点：N/A 熔点：N/A	1282132-65-3	C₁₇H₁₇BrN₄O₂S
N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：371.4 密度：N/A 沸点：N/A 熔点：N/A	1282129-41-2	C₂₀H₂₅N₃O₄
1-({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)piperidine-3-carboxylic acid	1-({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)piperidine-3-carboxylic acid	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	1282127-69-8	C₁₉H₂₁N₃O₄S
Methyl 4-({[2-(4-methoxyphenyl)-1-methyl-5-oxopyrrolidin-3-yl]carbonyl}amino)benzoate	Methyl 4-({[2-(4-methoxyphenyl)-1-methyl-5-oxopyrrolidin-3-yl]carbonyl}amino)benzoate	分子量：382.4 密度：N/A 沸点：N/A 熔点：N/A	1282117-97-8	C₂₁H₂₂N₂O₅
2-Cyano-4-fluorocinnamic acid	2-Cyano-4-fluorocinnamic acid	分子量：191.16 密度：N/A 沸点：N/A 熔点：N/A	77532-96-8	C₁₀H₆FNO₂
N-[(2Z)-5-(2-methoxyphenyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide	N-[(2Z)-5-(2-methoxyphenyl)-1,3,4-thiadiazol-2(3H)-ylidene]-1-methyl-5-oxopyrrolidine-3-carboxamide	分子量：332.4 密度：N/A 沸点：N/A 熔点：N/A	1282103-11-0	C₁₅H₁₆N₄O₃S
1-benzyl-N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-1H-indole-3-carboxamide	1-benzyl-N-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-1H-indole-3-carboxamide	分子量：362.5 密度：N/A 沸点：N/A 熔点：N/A	1282100-99-5	C₂₃H₂₆N₂O₂
1-{[3-(4-bromophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid	1-{[3-(4-bromophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}piperidine-3-carboxylic acid	分子量：420.3 密度：N/A 沸点：N/A 熔点：N/A	1282125-12-5	C₁₈H₁₈BrN₃O₄
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	分子量：441.5 密度：N/A 沸点：N/A 熔点：N/A	1282110-67-1	C₂₂H₂₀FN₃O₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	分子量：453.5 密度：N/A 沸点：N/A 熔点：N/A	1282127-89-2	C₂₃H₂₃N₃O₅S
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(trifluoromethyl)-1H-pyrazol-5-ol	1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(trifluoromethyl)-1H-pyrazol-5-ol	分子量：270.23 密度：N/A 沸点：N/A 熔点：N/A	1282096-19-8	C₈H₉F₃N₂O₃S
6-(4-bromophenyl)-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone	6-(4-bromophenyl)-2-[2-oxo-2-(2-phenylmorpholino)ethyl]-3(2H)-pyridazinone	分子量：454.3 密度：N/A 沸点：N/A 熔点：N/A	1282110-29-5	C₂₂H₂₀BrN₃O₃
2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)-N-(1,3-thiazol-2-yl)acetamide	2-(4-oxo-2-phenyl-1,4-dihydroquinazolin-3(2H)-yl)-N-(1,3-thiazol-2-yl)acetamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	1282110-79-5	C₁₉H₁₆N₄O₂S
benzyl N-[(3-sulfamoylphenyl)methyl]carbamate	benzyl N-[(3-sulfamoylphenyl)methyl]carbamate	分子量：320.4 密度：N/A 沸点：N/A 熔点：N/A	1871308-68-7	C₁₅H₁₆N₂O₄S
Benzyl 4-(2-chloroacetyl)piperazine-1-carboxylate	Benzyl 4-(2-chloroacetyl)piperazine-1-carboxylate	分子量：296.75 密度：N/A 沸点：N/A 熔点：N/A	154615-77-7	C₁₄H₁₇ClN₂O₃
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(2-phenylethyl)-1H-pyrazol-5-ol	1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-(2-phenylethyl)-1H-pyrazol-5-ol	分子量：320.4 密度：N/A 沸点：N/A 熔点：N/A	1282119-22-5	C₁₆H₂₀N₂O₃S
1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-[4-(propan-2-yl)benzyl]-1H-pyrazol-5-ol	1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-4-[4-(propan-2-yl)benzyl]-1H-pyrazol-5-ol	分子量：348.5 密度：N/A 沸点：N/A 熔点：N/A	1282130-55-5	C₁₈H₂₄N₂O₃S
1-(4-bromophenyl)-N-(1-methyl-1H-pyrazol-4-yl)-5-oxopyrrolidine-3-carboxamide	1-(4-bromophenyl)-N-(1-methyl-1H-pyrazol-4-yl)-5-oxopyrrolidine-3-carboxamide	分子量：363.21 密度：N/A 沸点：N/A 熔点：N/A	1282105-22-9	C₁₅H₁₅BrN₄O₂