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-bromo-N-[2-(3-methylphenyl)-4-oxo-4H-chromen-6-yl]benzamide	4-bromo-N-[2-(3-methylphenyl)-4-oxo-4H-chromen-6-yl]benzamide	分子量：434.3 密度：N/A 沸点：N/A 熔点：N/A	923186-35-0	C₂₃H₁₆BrNO₃
4-chloro-N-[2-(4-methoxyphenyl)-4-oxo-4H-chromen-6-yl]benzenesulfonamide	4-chloro-N-[2-(4-methoxyphenyl)-4-oxo-4H-chromen-6-yl]benzenesulfonamide	分子量：441.9 密度：N/A 沸点：N/A 熔点：N/A	923166-48-7	C₂₂H₁₆ClNO₅S
4-chloro-N-(2-(2-methoxyphenyl)-4-oxo-4H-chromen-6-yl)benzenesulfonamide	4-chloro-N-(2-(2-methoxyphenyl)-4-oxo-4H-chromen-6-yl)benzenesulfonamide	分子量：441.9 密度：N/A 沸点：N/A 熔点：N/A	923193-64-0	C₂₂H₁₆ClNO₅S
N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-6-yl]-3,4-dimethoxybenzamide	N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-6-yl]-3,4-dimethoxybenzamide	分子量：445.5 密度：N/A 沸点：N/A 熔点：N/A	923216-94-8	C₂₆H₂₃NO₆
3,4,5-trimethoxy-N-[2-(4-methylphenyl)-4-oxo-4H-chromen-6-yl]benzamide	3,4,5-trimethoxy-N-[2-(4-methylphenyl)-4-oxo-4H-chromen-6-yl]benzamide	分子量：445.5 密度：N/A 沸点：N/A 熔点：N/A	923166-06-7	C₂₆H₂₃NO₆
N-[2-(4-tert-butylphenyl)-4-oxo-4H-chromen-6-yl]-4-methylbenzenesulfonamide	N-[2-(4-tert-butylphenyl)-4-oxo-4H-chromen-6-yl]-4-methylbenzenesulfonamide	分子量：447.5 密度：N/A 沸点：N/A 熔点：N/A	923191-90-6	C₂₆H₂₅NO₄S
4-bromo-N-[2-(4-methoxyphenyl)-4-oxo-4H-chromen-6-yl]benzamide	4-bromo-N-[2-(4-methoxyphenyl)-4-oxo-4H-chromen-6-yl]benzamide	分子量：450.3 密度：N/A 沸点：N/A 熔点：N/A	923673-20-5	C₂₃H₁₆BrNO₄
4-bromo-N-(2-(2-methoxyphenyl)-4-oxo-4H-chromen-6-yl)benzamide	4-bromo-N-(2-(2-methoxyphenyl)-4-oxo-4H-chromen-6-yl)benzamide	分子量：450.3 密度：N/A 沸点：N/A 熔点：N/A	923164-81-2	C₂₃H₁₆BrNO₄
N-[2-(4-ethoxyphenyl)-4-oxochromen-7-yl]-2,2-dimethylpropanamide	N-[2-(4-ethoxyphenyl)-4-oxochromen-7-yl]-2,2-dimethylpropanamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	923174-35-0	C₂₂H₂₃NO₄
N-(2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)furan-2-carboxamide	N-(2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)furan-2-carboxamide	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	923156-35-8	C₂₂H₁₇NO₅
N-(2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)nicotinamide	N-(2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)nicotinamide	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	923256-63-7	C₂₃H₁₈N₂O₄
N-(2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)thiophene-2-carboxamide	N-(2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl)thiophene-2-carboxamide	分子量：391.4 密度：N/A 沸点：N/A 熔点：N/A	923186-25-8	C₂₂H₁₇NO₄S
N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-2-methylbenzamide	N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-2-methylbenzamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	923185-72-2	C₂₅H₂₁NO₄
N-[2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-4-fluorobenzamide	N-[2-(2-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-4-fluorobenzamide	分子量：403.4 密度：N/A 沸点：N/A 熔点：N/A	923186-23-6	C₂₄H₁₈FNO₄
N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-2-fluorobenzamide	N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]-2-fluorobenzamide	分子量：403.4 密度：N/A 沸点：N/A 熔点：N/A	923257-37-8	C₂₄H₁₈FNO₄
4-tert-butyl-N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]benzamide	4-tert-butyl-N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]benzamide	分子量：441.5 密度：N/A 沸点：N/A 熔点：N/A	923139-93-9	C₂₈H₂₇NO₄
4-tert-butyl-N-[2-(4-tert-butylphenyl)-4-oxo-4H-chromen-7-yl]benzamide	4-tert-butyl-N-[2-(4-tert-butylphenyl)-4-oxo-4H-chromen-7-yl]benzamide	分子量：453.6 密度：N/A 沸点：N/A 熔点：N/A	923140-74-3	C₃₀H₃₁NO₃
N-{[3-(2,3-dihydro-1,4-benzodioxine-6-sulfonyl)-1,3-oxazolidin-2-yl]methyl}-N'-[2-(3,4-dimethoxyphenyl)ethyl]ethanediamide	N-{[3-(2,3-dihydro-1,4-benzodioxine-6-sulfonyl)-1,3-oxazolidin-2-yl]methyl}-N'-[2-(3,4-dimethoxyphenyl)ethyl]ethanediamide	分子量：535.6 密度：N/A 沸点：N/A 熔点：N/A	868982-33-6	C₂₄H₂₉N₃O₉S
4-bromo-N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]benzamide	4-bromo-N-[2-(4-ethoxyphenyl)-4-oxo-4H-chromen-7-yl]benzamide	分子量：464.3 密度：N/A 沸点：N/A 熔点：N/A	923140-15-2	C₂₄H₁₈BrNO₄
N-(sec-butyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	N-(sec-butyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：301.34 密度：N/A 沸点：N/A 熔点：N/A	921882-97-5	C₁₆H₁₉N₃O₃
(2-Amino-5-nitrophenyl)(2-chlorophenyl)methanone Phthalimido	(2-Amino-5-nitrophenyl)(2-chlorophenyl)methanone Phthalimido	分子量：463.8 密度：N/A 沸点：N/A 熔点：N/A	2245694-97-5	C₂₃H₁₄ClN₃O₆
N-(2,2-diethoxyethyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	N-(2,2-diethoxyethyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	921516-25-8	C₁₈H₂₃N₃O₅
(S)-1-(6-(Hydroxymethyl)pyridin-2-yl)ethan-1-ol	(S)-1-(6-(Hydroxymethyl)pyridin-2-yl)ethan-1-ol	分子量：153.18 密度：N/A 沸点：N/A 熔点：N/A	207735-35-1	C₈H₁₁NO₂
2-Fluoro-1-isocyano-4-nitrobenzene	2-Fluoro-1-isocyano-4-nitrobenzene	分子量：166.11 密度：N/A 沸点：N/A 熔点：N/A	1403763-15-4	C₇H₃FN₂O₂
4-methoxy-N-(4-methoxybenzyl)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	4-methoxy-N-(4-methoxybenzyl)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1005302-17-9	C₂₀H₁₉N₃O₄
6-[(6-fluoro-2-methyl-3,4-dihydroquinolin-1(2H)-yl)carbonyl]-5-methoxy-2-phenylpyridazin-3(2H)-one	6-[(6-fluoro-2-methyl-3,4-dihydroquinolin-1(2H)-yl)carbonyl]-5-methoxy-2-phenylpyridazin-3(2H)-one	分子量：393.4 密度：N/A 沸点：N/A 熔点：N/A	1005296-35-4	C₂₂H₂₀FN₃O₃
N-(2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)benzo[d][1,3]dioxole-5-carboxamide	N-(2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)benzo[d][1,3]dioxole-5-carboxamide	分子量：310.30 密度：N/A 沸点：N/A 熔点：N/A	99139-83-0	C₁₇H₁₄N₂O₄
N-mesityl-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	N-mesityl-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1005302-48-6	C₂₁H₂₁N₃O₃
5-methoxy-6-[(3-methylpiperidino)carbonyl]-2-phenyl-3(2H)-pyridazinone	5-methoxy-6-[(3-methylpiperidino)carbonyl]-2-phenyl-3(2H)-pyridazinone	分子量：327.4 密度：N/A 沸点：N/A 熔点：N/A	1005302-69-1	C₁₈H₂₁N₃O₃
N-(3,3-diphenylpropyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	N-(3,3-diphenylpropyl)-4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	1005296-57-0	C₂₇H₂₅N₃O₃
4-methoxy-6-oxo-1-(o-tolyl)-N-(4-(trifluoromethoxy)phenyl)-1,6-dihydropyridazine-3-carboxamide	4-methoxy-6-oxo-1-(o-tolyl)-N-(4-(trifluoromethoxy)phenyl)-1,6-dihydropyridazine-3-carboxamide	分子量：419.4 密度：N/A 沸点：N/A 熔点：N/A	941969-28-4	C₂₀H₁₆F₃N₃O₄
4-bromomethyl-5-chloro-1-methyl-3-trifluoromethyl-1H-pyrazole	4-bromomethyl-5-chloro-1-methyl-3-trifluoromethyl-1H-pyrazole	分子量：277.47 密度：N/A 沸点：N/A 熔点：N/A	479638-62-5	C₆H₅BrClF₃N₂
1,2-Bis(2,5-dimethylthiophen-3-yl)ethane-1,2-dione	1,2-Bis(2,5-dimethylthiophen-3-yl)ethane-1,2-dione	分子量：278.4 密度：N/A 沸点：N/A 熔点：N/A	301662-11-3	C₁₄H₁₄O₂S₂
Ethyl 4-(2-Benzyloxyphenoxy)-butyrate	Ethyl 4-(2-Benzyloxyphenoxy)-butyrate	分子量：314.4 密度：N/A 沸点：N/A 熔点：N/A	144879-22-1	C₁₉H₂₂O₄
N-benzyl-4-methoxy-1-(2-methylphenyl)-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide	N-benzyl-4-methoxy-1-(2-methylphenyl)-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide	分子量：425.5 密度：N/A 沸点：N/A 熔点：N/A	1005303-12-7	C₂₆H₂₃N₃O₃
6-(4-(furan-2-carbonyl)piperazine-1-carbonyl)-5-methoxy-2-(p-tolyl)pyridazin-3(2H)-one	6-(4-(furan-2-carbonyl)piperazine-1-carbonyl)-5-methoxy-2-(p-tolyl)pyridazin-3(2H)-one	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	941879-46-5	C₂₂H₂₂N₄O₅
N-(2-chloro-5-(trifluoromethyl)phenyl)-4-methoxy-6-oxo-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxamide	N-(2-chloro-5-(trifluoromethyl)phenyl)-4-methoxy-6-oxo-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxamide	分子量：437.8 密度：N/A 沸点：N/A 熔点：N/A	942005-15-4	C₂₀H₁₅ClF₃N₃O₃
4-methoxy-6-oxo-1-(p-tolyl)-N-(4-(trifluoromethoxy)phenyl)-1,6-dihydropyridazine-3-carboxamide	4-methoxy-6-oxo-1-(p-tolyl)-N-(4-(trifluoromethoxy)phenyl)-1,6-dihydropyridazine-3-carboxamide	分子量：419.4 密度：N/A 沸点：N/A 熔点：N/A	941927-01-1	C₂₀H₁₆F₃N₃O₄
N-(4-bromo-2-methylphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	N-(4-bromo-2-methylphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	分子量：428.3 密度：N/A 沸点：N/A 熔点：N/A	1005296-94-5	C₂₀H₁₈BrN₃O₃
rel-(6R,8S)-6,8-Hentriacontanediol	rel-(6R,8S)-6,8-Hentriacontanediol	分子量：468.8 密度：N/A 沸点：N/A 熔点：N/A	155800-88-7	C₃₁H₆₄O₂
4-methoxy-N,1-bis(4-methylphenyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	4-methoxy-N,1-bis(4-methylphenyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	分子量：349.4 密度：N/A 沸点：N/A 熔点：N/A	1005296-99-0	C₂₀H₁₉N₃O₃
4-methoxy-1-(4-methylphenyl)-6-oxo-N-(1-phenylethyl)-1,6-dihydropyridazine-3-carboxamide	4-methoxy-1-(4-methylphenyl)-6-oxo-N-(1-phenylethyl)-1,6-dihydropyridazine-3-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1005297-08-4	C₂₁H₂₁N₃O₃
2-(4-fluorophenyl)-5-methoxy-6-(2-methylpiperidine-1-carbonyl)pyridazin-3(2H)-one	2-(4-fluorophenyl)-5-methoxy-6-(2-methylpiperidine-1-carbonyl)pyridazin-3(2H)-one	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	921836-24-0	C₁₈H₂₀FN₃O₃
(2,6-Dichlorophenyl)methanesulfonamide	(2,6-Dichlorophenyl)methanesulfonamide	分子量：240.11 密度：N/A 沸点：N/A 熔点：N/A	103482-25-3	C₇H₇Cl₂NO₂S
2,4-Dichloro-6-cyanoamino-sym-triazine	2,4-Dichloro-6-cyanoamino-sym-triazine	分子量：189.99 密度：N/A 沸点：N/A 熔点：N/A	49629-47-2	C₄HCl₂N₅
Ethyl 1-(1-(4-fluorophenyl)-4-methoxy-6-oxo-1,6-dihydropyridazine-3-carbonyl)piperidine-3-carboxylate	Ethyl 1-(1-(4-fluorophenyl)-4-methoxy-6-oxo-1,6-dihydropyridazine-3-carbonyl)piperidine-3-carboxylate	分子量：403.4 密度：N/A 沸点：N/A 熔点：N/A	941969-54-6	C₂₀H₂₂FN₃O₅
1-(4-fluorophenyl)-4-methoxy-N-(6-nitrobenzo[d]thiazol-2-yl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	1-(4-fluorophenyl)-4-methoxy-N-(6-nitrobenzo[d]thiazol-2-yl)-6-oxo-1,6-dihydropyridazine-3-carboxamide	分子量：441.4 密度：N/A 沸点：N/A 熔点：N/A	941969-64-8	C₁₉H₁₂FN₅O₅S
N-(3,4-dimethylphenyl)-1-(4-fluorophenyl)-4-methoxy-6-oxo-1,6-dihydropyridazine-3-carboxamide	N-(3,4-dimethylphenyl)-1-(4-fluorophenyl)-4-methoxy-6-oxo-1,6-dihydropyridazine-3-carboxamide	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	941927-28-2	C₂₀H₁₈FN₃O₃
2-((1-(2-oxo-2-(piperidin-1-yl)ethyl)-1H-indol-3-yl)sulfonyl)-N-(o-tolyl)acetamide	2-((1-(2-oxo-2-(piperidin-1-yl)ethyl)-1H-indol-3-yl)sulfonyl)-N-(o-tolyl)acetamide	分子量：453.6 密度：N/A 沸点：N/A 熔点：N/A	878058-50-5	C₂₄H₂₇N₃O₄S
2-((1-(2-oxo-2-(piperidin-1-yl)ethyl)-1H-indol-3-yl)sulfonyl)-N-(m-tolyl)acetamide	2-((1-(2-oxo-2-(piperidin-1-yl)ethyl)-1H-indol-3-yl)sulfonyl)-N-(m-tolyl)acetamide	分子量：453.6 密度：N/A 沸点：N/A 熔点：N/A	878058-53-8	C₂₄H₂₇N₃O₄S