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
2-(2-(1,2-dimethyl-1H-indol-3-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one	2-(2-(1,2-dimethyl-1H-indol-3-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	1282129-85-4	C₂₂H₁₈FN₃O₂
3-(5-Ethylfuran-2-yl)-1lambda6-thiomorpholine-1,1-dione	3-(5-Ethylfuran-2-yl)-1lambda6-thiomorpholine-1,1-dione	分子量：229.30 密度：N/A 沸点：N/A 熔点：N/A	1315366-81-4	C₁₀H₁₅NO₃S
2-(4-methoxy-1H-indol-1-yl)-N-[(2Z)-4-(pyridin-4-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-(4-methoxy-1H-indol-1-yl)-N-[(2Z)-4-(pyridin-4-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	1282119-28-1	C₁₉H₁₆N₄O₂S
N-[(2E)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[(2E)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	1282109-74-3	C₂₀H₂₈N₆O₂S
4-{[({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)amino]methyl}benzoic acid	4-{[({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)amino]methyl}benzoic acid	分子量：409.5 密度：N/A 沸点：N/A 熔点：N/A	1282142-70-4	C₂₁H₁₉N₃O₄S
N-(2-chlorophenyl)-1-(1H-tetrazol-1-yl)cyclohexanecarboxamide	N-(2-chlorophenyl)-1-(1H-tetrazol-1-yl)cyclohexanecarboxamide	分子量：305.76 密度：N/A 沸点：N/A 熔点：N/A	1282124-80-4	C₁₄H₁₆ClN₅O
N-(1-benzylpiperidin-4-yl)-3-(4-methoxy-1H-indol-1-yl)propanamide	N-(1-benzylpiperidin-4-yl)-3-(4-methoxy-1H-indol-1-yl)propanamide	分子量：391.5 密度：N/A 沸点：N/A 熔点：N/A	1282109-77-6	C₂₄H₂₉N₃O₂
N-benzyl-N-methyl-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide	N-benzyl-N-methyl-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1282122-65-9	C₂₅H₂₆N₆O
N-(1-benzylpiperidin-4-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(1-benzylpiperidin-4-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：411.5 密度：N/A 沸点：N/A 熔点：N/A	1282119-31-6	C₂₂H₂₉N₅O₃
5-bromo-N-[1-(cyclobutylcarbonyl)piperidin-4-yl]furan-2-carboxamide	5-bromo-N-[1-(cyclobutylcarbonyl)piperidin-4-yl]furan-2-carboxamide	分子量：355.23 密度：N/A 沸点：N/A 熔点：N/A	1282122-67-1	C₁₅H₁₉BrN₂O₃
N-[1-(1H-indol-2-ylcarbonyl)piperidin-4-yl]-2-phenylacetamide	N-[1-(1H-indol-2-ylcarbonyl)piperidin-4-yl]-2-phenylacetamide	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1282103-29-0	C₂₂H₂₃N₃O₂
methyl N-{[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycinate	methyl N-{[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycinate	分子量：322.36 密度：N/A 沸点：N/A 熔点：N/A	1282120-98-2	C₁₅H₂₂N₄O₄
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：398.5 密度：N/A 沸点：N/A 熔点：N/A	1282119-34-9	C₂₀H₂₂N₄O₃S
N-[(2Z)-3,4,5,6,7,8-hexahydro-2H-cyclohepta[d][1,3]thiazol-2-ylidene]-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[(2Z)-3,4,5,6,7,8-hexahydro-2H-cyclohepta[d][1,3]thiazol-2-ylidene]-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：410.5 密度：N/A 沸点：N/A 熔点：N/A	1282098-06-9	C₂₁H₂₂N₄O₃S
2-[2-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-6-[4-(methylsulfanyl)phenyl]pyridazin-3(2H)-one	2-[2-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-6-[4-(methylsulfanyl)phenyl]pyridazin-3(2H)-one	分子量：451.5 密度：N/A 沸点：N/A 熔点：N/A	1282142-72-6	C₂₄H₂₅N₃O₄S
N-(3-methoxyphenyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	N-(3-methoxyphenyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	分子量：327.4 密度：N/A 沸点：N/A 熔点：N/A	1282114-65-1	C₁₈H₂₁N₃O₃
6-[4-(methylsulfanyl)phenyl]-2-{2-oxo-2-[4-(2-pyridyl)piperazino]ethyl}-3(2H)-pyridazinone	6-[4-(methylsulfanyl)phenyl]-2-{2-oxo-2-[4-(2-pyridyl)piperazino]ethyl}-3(2H)-pyridazinone	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	1282101-03-4	C₂₂H₂₃N₅O₂S
N-(3-methoxyphenyl)-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide	N-(3-methoxyphenyl)-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	1282095-99-1	C₂₄H₂₄N₆O₂
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide	N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide	分子量：368.5 密度：N/A 沸点：N/A 熔点：N/A	1282142-57-7	C₁₉H₂₀N₄O₂S
5-bromo-N-[2-(4-oxoquinazolin-3(4H)-yl)ethyl]furan-2-carboxamide	5-bromo-N-[2-(4-oxoquinazolin-3(4H)-yl)ethyl]furan-2-carboxamide	分子量：362.18 密度：N/A 沸点：N/A 熔点：N/A	1282142-64-6	C₁₅H₁₂BrN₃O₃
N-[2-(1H-imidazol-4-yl)ethyl]-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide	N-[2-(1H-imidazol-4-yl)ethyl]-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide	分子量：289.32 密度：N/A 沸点：N/A 熔点：N/A	1282130-15-7	C₁₂H₁₁N₅O₂S
6-[4-(methylsulfanyl)phenyl]-2-(2-morpholino-2-oxoethyl)-3(2H)-pyridazinone	6-[4-(methylsulfanyl)phenyl]-2-(2-morpholino-2-oxoethyl)-3(2H)-pyridazinone	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	1282096-15-4	C₁₇H₁₉N₃O₃S
N-{[3-(naphthalen-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycylglycine	N-{[3-(naphthalen-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycylglycine	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	1282123-95-8	C₂₀H₁₈N₄O₅
N-(3-methoxypropyl)-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide	N-(3-methoxypropyl)-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	1282130-17-9	C₁₇H₂₁N₃O₃S
N-(2-chlorobenzyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	N-(2-chlorobenzyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide	分子量：345.8 密度：N/A 沸点：N/A 熔点：N/A	1282098-13-8	C₁₈H₂₀ClN₃O₂
2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(6-methoxypyridin-3-yl)acetamide	2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(6-methoxypyridin-3-yl)acetamide	分子量：396.4 密度：N/A 沸点：N/A 熔点：N/A	1282112-55-3	C₂₀H₂₀N₄O₅
3-(6-chloro-1H-indol-1-yl)-N-(2-methyl-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)propanamide	3-(6-chloro-1H-indol-1-yl)-N-(2-methyl-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)propanamide	分子量：360.9 密度：N/A 沸点：N/A 熔点：N/A	1282119-39-4	C₁₇H₁₇ClN₄OS
2-(benzylamino)-N-(2-thienylmethyl)-1,3-thiazole-4-carboxamide	2-(benzylamino)-N-(2-thienylmethyl)-1,3-thiazole-4-carboxamide	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	1282131-98-9	C₁₆H₁₅N₃OS₂
4-(4-methoxyphenyl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]-1,2,3-thiadiazole-5-carboxamide	4-(4-methoxyphenyl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]-1,2,3-thiadiazole-5-carboxamide	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	1282121-03-2	C₁₈H₁₃N₅O₂S₂
methyl 4-{[(2,3-dimethyl-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidin-6-yl)carbonyl]amino}benzoate	methyl 4-{[(2,3-dimethyl-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidin-6-yl)carbonyl]amino}benzoate	分子量：357.4 密度：N/A 沸点：N/A 熔点：N/A	1282142-71-5	C₁₇H₁₅N₃O₄S
2-[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[3-(methylsulfanyl)phenyl]acetamide	2-[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[3-(methylsulfanyl)phenyl]acetamide	分子量：411.5 密度：N/A 沸点：N/A 熔点：N/A	1282124-89-3	C₂₁H₂₁N₃O₄S
N-(2-fluorobenzyl)-2-[3-(1-naphthyl)-6-oxo-1(6H)-pyridazinyl]acetamide	N-(2-fluorobenzyl)-2-[3-(1-naphthyl)-6-oxo-1(6H)-pyridazinyl]acetamide	分子量：387.4 密度：N/A 沸点：N/A 熔点：N/A	1282125-08-9	C₂₃H₁₈FN₃O₂
N-[4-methoxy-3-(1H-pyrrol-1-yl)phenyl]pyridine-2-carboxamide	N-[4-methoxy-3-(1H-pyrrol-1-yl)phenyl]pyridine-2-carboxamide	分子量：293.32 密度：N/A 沸点：N/A 熔点：N/A	1282114-67-3	C₁₇H₁₅N₃O₂
2-(3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(3,4-dimethoxybenzyl)acetamide	2-(3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(3,4-dimethoxybenzyl)acetamide	分子量：413.9 密度：N/A 沸点：N/A 熔点：N/A	1282114-68-4	C₂₁H₂₀ClN₃O₄
N-(3,5-dimethoxyphenyl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(3,5-dimethoxyphenyl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：374.4 密度：N/A 沸点：N/A 熔点：N/A	1282119-45-2	C₁₈H₂₂N₄O₅
N-[1-(1H-indol-3-ylcarbonyl)piperidin-4-yl]pyridine-3-carboxamide	N-[1-(1H-indol-3-ylcarbonyl)piperidin-4-yl]pyridine-3-carboxamide	分子量：348.4 密度：N/A 沸点：N/A 熔点：N/A	1282125-19-2	C₂₀H₂₀N₄O₂
ethyl (2-{[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]amino}-1,3-thiazol-4-yl)acetate	ethyl (2-{[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]amino}-1,3-thiazol-4-yl)acetate	分子量：390.5 密度：N/A 沸点：N/A 熔点：N/A	1282114-69-5	C₁₈H₂₂N₄O₄S
N-cyclopentyl-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-cyclopentyl-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：306.36 密度：N/A 沸点：N/A 熔点：N/A	1282132-03-9	C₁₅H₂₂N₄O₃
4-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]butanamide	4-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]butanamide	分子量：392.4 密度：N/A 沸点：N/A 熔点：N/A	1282121-13-4	C₁₉H₁₆N₆O₂S
2-{2-[4-(3-methoxyphenyl)piperazino]-2-oxoethyl}-6-[4-(methylsulfanyl)phenyl]-3(2H)-pyridazinone	2-{2-[4-(3-methoxyphenyl)piperazino]-2-oxoethyl}-6-[4-(methylsulfanyl)phenyl]-3(2H)-pyridazinone	分子量：450.6 密度：N/A 沸点：N/A 熔点：N/A	1282142-78-2	C₂₄H₂₆N₄O₃S
4-[({[3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]benzoic acid	4-[({[3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]benzoic acid	分子量：397.8 密度：N/A 沸点：N/A 熔点：N/A	1282096-18-7	C₂₀H₁₆ClN₃O₄
2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]-N-(4-phenoxyphenyl)acetamide	2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]-N-(4-phenoxyphenyl)acetamide	分子量：406.4 密度：N/A 沸点：N/A 熔点：N/A	1282117-82-1	C₂₂H₂₂N₄O₄
N-(3-methylbutyl)-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(3-methylbutyl)-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：320.4 密度：N/A 沸点：N/A 熔点：N/A	1282125-41-0	C₁₇H₂₈N₄O₂
N-[(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)acetyl]glycine	N-[(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)acetyl]glycine	分子量：321.28 密度：N/A 沸点：N/A 熔点：N/A	1282121-36-1	C₁₄H₁₅N₃O₆
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide	N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1282114-70-8	C₂₀H₂₂N₄O₂S₂
N-(1H-indol-6-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(1H-indol-6-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1282142-86-2	C₁₈H₁₉N₅O₃
N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-2,1,3-benzothiadiazole-4-sulfonamide	N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-2,1,3-benzothiadiazole-4-sulfonamide	分子量：380.5 密度：N/A 沸点：N/A 熔点：N/A	1282118-88-0	C₁₆H₂₀N₄O₃S₂
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(4-methoxyphenethyl)acetamide	2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(4-methoxyphenethyl)acetamide	分子量：397.9 密度：N/A 沸点：N/A 熔点：N/A	1282096-22-3	C₂₁H₂₀ClN₃O₃
2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(1-methyl-1H-pyrazol-4-yl)acetamide	2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(1-methyl-1H-pyrazol-4-yl)acetamide	分子量：343.77 密度：N/A 沸点：N/A 熔点：N/A	1282132-04-0	C₁₆H₁₄ClN₅O₂
2-[3-(4-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isobutylacetamide	2-[3-(4-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isobutylacetamide	分子量：319.78 密度：N/A 沸点：N/A 熔点：N/A	1282119-50-9	C₁₆H₁₈ClN₃O₂