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
Tert-Butyl 4-(4-(6-Bromo-4-methyl-3-oxo-3,4-dihydropyrazin-2-ylamino)phenyl)piperazine-1-carboxylate	Tert-Butyl 4-(4-(6-Bromo-4-methyl-3-oxo-3,4-dihydropyrazin-2-ylamino)phenyl)piperazine-1-carboxylate	分子量：464.4 密度：N/A 沸点：N/A 熔点：N/A	1346676-54-7	C₂₀H₂₆BrN₅O₃
N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}-beta-alanine	N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}-beta-alanine	分子量：320.4 密度：N/A 沸点：N/A 熔点：N/A	1246064-60-7	C₁₅H₁₆N₂O₄S
2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-2-yl)acetamide	2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-2-yl)acetamide	分子量：336.3 密度：N/A 沸点：N/A 熔点：N/A	1246042-70-5	C₁₈H₁₆N₄O₃
5-Bromo-3-(1-ethyl-1H-pyrazol-4-ylamino)-1-methylpyrazin-2(1H)-one	5-Bromo-3-(1-ethyl-1H-pyrazol-4-ylamino)-1-methylpyrazin-2(1H)-one	分子量：298.14 密度：N/A 沸点：N/A 熔点：N/A	1202932-39-5	C₁₀H₁₂BrN₅O
N-(2-chlorobenzyl)-2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(2-chlorobenzyl)-2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：388.2 密度：N/A 沸点：N/A 熔点：N/A	1246055-83-3	C₁₉H₁₅Cl₂N₃O₂
1-[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]piperidine-4-carboxylic acid	1-[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]piperidine-4-carboxylic acid	分子量：333.4 密度：N/A 沸点：N/A 熔点：N/A	1246072-97-8	C₁₇H₂₃N₃O₄
5-Bromo-1-methyl-3-(4-(piperidin-4-yl)phenylamino)pyrazin-2(1H)-one	5-Bromo-1-methyl-3-(4-(piperidin-4-yl)phenylamino)pyrazin-2(1H)-one	分子量：363.25 密度：N/A 沸点：N/A 熔点：N/A	1346674-98-3	C₁₆H₁₉BrN₄O
N-(2,3-dihydro-1H-inden-2-yl)-3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridine-4-carboxamide	N-(2,3-dihydro-1H-inden-2-yl)-3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridine-4-carboxamide	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	1246047-05-1	C₂₀H₂₁N₃O₂
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(3,4-dimethoxyphenethyl)acetamide	2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(3,4-dimethoxyphenethyl)acetamide	分子量：427.9 密度：N/A 沸点：N/A 熔点：N/A	1246069-82-8	C₂₂H₂₂ClN₃O₄
N-(4-fluoro-2-{[2-(2-methoxyphenyl)ethyl]carbamoyl}phenyl)pyrrolidine-1-carboxamide	N-(4-fluoro-2-{[2-(2-methoxyphenyl)ethyl]carbamoyl}phenyl)pyrrolidine-1-carboxamide	分子量：385.4 密度：N/A 沸点：N/A 熔点：N/A	1246055-89-9	C₂₁H₂₄FN₃O₃
N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}glycylglycine	N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}glycylglycine	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1246072-46-7	C₁₆H₁₇N₃O₅S
N-(2-{[(2Z)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]amino}-2-oxoethyl)-4-(pyridin-2-yl)piperazine-1-carboxamide	N-(2-{[(2Z)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]amino}-2-oxoethyl)-4-(pyridin-2-yl)piperazine-1-carboxamide	分子量：429.5 密度：N/A 沸点：N/A 熔点：N/A	1246057-68-0	C₂₀H₂₇N₇O₂S
N-{[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetyl}glycine	N-{[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetyl}glycine	分子量：293.30 密度：N/A 沸点：N/A 熔点：N/A	1246063-93-3	C₁₂H₁₁N₃O₄S
(4-benzylpiperazin-1-yl)[3,4-dimethyl-2-(1H-tetrazol-1-yl)phenyl]methanone	(4-benzylpiperazin-1-yl)[3,4-dimethyl-2-(1H-tetrazol-1-yl)phenyl]methanone	分子量：376.5 密度：N/A 沸点：N/A 熔点：N/A	1246073-20-0	C₂₁H₂₄N₆O
{1-[({[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid	{1-[({[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	1246047-17-5	C₂₂H₂₇N₃O₅
N-[2-(1H-benzimidazol-2-ylamino)-2-oxoethyl]-4-(pyridin-2-yl)piperazine-1-carboxamide	N-[2-(1H-benzimidazol-2-ylamino)-2-oxoethyl]-4-(pyridin-2-yl)piperazine-1-carboxamide	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	1246057-83-9	C₁₉H₂₁N₇O₂
2-{2-[4-(3-chlorophenyl)piperazino]-2-oxoethyl}-6-(2-furyl)-3(2H)-pyridazinone	2-{2-[4-(3-chlorophenyl)piperazino]-2-oxoethyl}-6-(2-furyl)-3(2H)-pyridazinone	分子量：398.8 密度：N/A 沸点：N/A 熔点：N/A	1246055-10-6	C₂₀H₁₉ClN₄O₃
2-((4-Methylbenzyl)(propyl)amino)acetonitrile	2-((4-Methylbenzyl)(propyl)amino)acetonitrile	分子量：202.30 密度：N/A 沸点：N/A 熔点：N/A	1249288-57-0	C₁₃H₁₈N₂
{1-[({[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid	{1-[({[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid	分子量：443.5 密度：N/A 沸点：N/A 熔点：N/A	1246064-70-9	C₂₃H₂₉N₃O₆
N-[2-(1H-indol-3-yl)ethyl]-4-propyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	N-[2-(1H-indol-3-yl)ethyl]-4-propyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	分子量：378.5 密度：N/A 沸点：N/A 熔点：N/A	1246064-06-1	C₂₁H₂₂N₄OS
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isopropylacetamide	2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isopropylacetamide	分子量：305.76 密度：N/A 沸点：N/A 熔点：N/A	1246060-25-2	C₁₅H₁₆ClN₃O₂
2-{2-[4-(4-methoxyphenyl)piperazino]-2-oxoethyl}-6-(2-thienyl)-3(2H)-pyridazinone	2-{2-[4-(4-methoxyphenyl)piperazino]-2-oxoethyl}-6-(2-thienyl)-3(2H)-pyridazinone	分子量：410.5 密度：N/A 沸点：N/A 熔点：N/A	1246064-75-4	C₂₁H₂₂N₄O₃S
N-(1-cyanocycloheptyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide	N-(1-cyanocycloheptyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide	分子量：347.5 密度：N/A 沸点：N/A 熔点：N/A	1311818-02-6	C₁₈H₂₉N₅O₂
N-(4-tert-butylphenyl)-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-(4-tert-butylphenyl)-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：409.5 密度：N/A 沸点：N/A 熔点：N/A	1246070-08-5	C₂₃H₂₄FN₃O₃
N-(1-cyano-1-cyclopropylethyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide	N-(1-cyano-1-cyclopropylethyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide	分子量：319.40 密度：N/A 沸点：N/A 熔点：N/A	1311466-85-9	C₁₆H₂₅N₅O₂
N-[(2E)-5-cyclopropyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetamide	N-[(2E)-5-cyclopropyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	1246043-14-0	C₁₅H₁₃N₅O₂S₂
methyl N-({5-fluoro-2-[(pyrrolidin-1-ylcarbonyl)amino]phenyl}carbonyl)glycinate	methyl N-({5-fluoro-2-[(pyrrolidin-1-ylcarbonyl)amino]phenyl}carbonyl)glycinate	分子量：323.32 密度：N/A 沸点：N/A 熔点：N/A	1246048-83-8	C₁₅H₁₈FN₃O₄
N-{2-[(1-benzylpiperidin-4-yl)carbamoyl]-4-fluorophenyl}pyrrolidine-1-carboxamide	N-{2-[(1-benzylpiperidin-4-yl)carbamoyl]-4-fluorophenyl}pyrrolidine-1-carboxamide	分子量：424.5 密度：N/A 沸点：N/A 熔点：N/A	1246049-33-1	C₂₄H₂₉FN₄O₂
4-({[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)butanoic acid	4-({[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)butanoic acid	分子量：363.34 密度：N/A 沸点：N/A 熔点：N/A	1246064-19-6	C₁₇H₁₈FN₃O₅
6-(2-chlorophenyl)-2-[2-oxo-2-(1-pyrrolidinyl)ethyl]-3(2H)-pyridazinone	6-(2-chlorophenyl)-2-[2-oxo-2-(1-pyrrolidinyl)ethyl]-3(2H)-pyridazinone	分子量：317.77 密度：N/A 沸点：N/A 熔点：N/A	1246060-44-5	C₁₆H₁₆ClN₃O₂
5-Bromo-1-methyl-3-(2-methylisoindolin-5-ylamino)pyrazin-2(1H)-one	5-Bromo-1-methyl-3-(2-methylisoindolin-5-ylamino)pyrazin-2(1H)-one	分子量：335.20 密度：N/A 沸点：N/A 熔点：N/A	1346675-30-6	C₁₄H₁₅BrN₄O
N-[3-(acetylamino)phenyl]-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[3-(acetylamino)phenyl]-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：410.4 密度：N/A 沸点：N/A 熔点：N/A	1246049-37-5	C₂₁H₁₉FN₄O₄
6-Chloro-2-isopropyl-3-methyl-3H-quinazolin-4-one	6-Chloro-2-isopropyl-3-methyl-3H-quinazolin-4-one	分子量：236.70 密度：N/A 沸点：N/A 熔点：N/A	815593-50-1	C₁₂H₁₃ClN₂O
4-butyl-N-(1H-indol-5-yl)-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	4-butyl-N-(1H-indol-5-yl)-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	分子量：364.5 密度：N/A 沸点：N/A 熔点：N/A	1246071-63-5	C₂₀H₂₀N₄OS
N-(1-cyanocycloheptyl)-2-{[4-(ethanesulfonyl)phenyl]amino}acetamide	N-(1-cyanocycloheptyl)-2-{[4-(ethanesulfonyl)phenyl]amino}acetamide	分子量：363.5 密度：N/A 沸点：N/A 熔点：N/A	1298626-19-3	C₁₈H₂₅N₃O₃S
5-Bromo-1-methyl-3-(1-methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-ylamino)pyridin-2(1H)-one	5-Bromo-1-methyl-3-(1-methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-ylamino)pyridin-2(1H)-one	分子量：382.26 密度：N/A 沸点：N/A 熔点：N/A	1346676-45-6	C₁₅H₂₀BrN₅O₂
1-Methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-amine	1-Methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-amine	分子量：196.25 密度：N/A 沸点：N/A 熔点：N/A	1346676-44-5	C₉H₁₆N₄O
5,6,7,8-Tetrahydro-1H-benzo[b]cyclopenta[d]thiophen-3(2H)-one	5,6,7,8-Tetrahydro-1H-benzo[b]cyclopenta[d]thiophen-3(2H)-one	分子量：192.28 密度：N/A 沸点：N/A 熔点：N/A	1346672-54-5	C₁₁H₁₂OS
2'-(2-methoxyethyl)-1'-oxo-N-(5-propyl-1,3,4-thiadiazol-2-yl)-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	2'-(2-methoxyethyl)-1'-oxo-N-(5-propyl-1,3,4-thiadiazol-2-yl)-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	分子量：442.6 密度：N/A 沸点：N/A 熔点：N/A	1246036-38-3	C₂₃H₃₀N₄O₃S
5-Bromo-1-methyl-3-[[6-(1-piperazinyl)-3-pyridazinyl]amino]-2(1h)-pyridinone	5-Bromo-1-methyl-3-[[6-(1-piperazinyl)-3-pyridazinyl]amino]-2(1h)-pyridinone	分子量：365.23 密度：N/A 沸点：N/A 熔点：N/A	1346676-67-2	C₁₄H₁₇BrN₆O
3,4,6,7,8,9-Hexahydro-6,9-methanopyrazino[1,2-a]indol-1(2H)-one	3,4,6,7,8,9-Hexahydro-6,9-methanopyrazino[1,2-a]indol-1(2H)-one	分子量：202.25 密度：N/A 沸点：N/A 熔点：N/A	1346676-80-9	C₁₂H₁₄N₂O
N-Methyl-N-((1-methyl-3-nitro-1H-pyrazol-5-yl)methyl)oxetan-3-amine	N-Methyl-N-((1-methyl-3-nitro-1H-pyrazol-5-yl)methyl)oxetan-3-amine	分子量：226.23 密度：N/A 沸点：N/A 熔点：N/A	1346676-43-4	C₉H₁₄N₄O₃
1,4-Piperidinedicarboxamide, N4-[6-(1-pyrrolidinyl)-3-pyridinyl]-	1,4-Piperidinedicarboxamide, N4-[6-(1-pyrrolidinyl)-3-pyridinyl]-	分子量：317.39 密度：N/A 沸点：N/A 熔点：N/A	1311745-98-8	C₁₆H₂₃N₅O₂
2-(3-bromo-2-methylphenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one	2-(3-bromo-2-methylphenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one	分子量：359.3 密度：N/A 沸点：N/A 熔点：N/A	1346672-38-5	C₁₈H₁₉BrN₂O
(1-(2-bromoethyl)-3-nitro-1H-pyrazol-5-yl)methanol	(1-(2-bromoethyl)-3-nitro-1H-pyrazol-5-yl)methanol	分子量：250.05 密度：N/A 沸点：N/A 熔点：N/A	1227210-30-1	C₆H₈BrN₃O₃
Ethyl 1-(2-aminoethyl)-1,4,5,6-tetrahydro-5,5-dimethylcyclopenta[b]pyrrole-2-carboxylate	Ethyl 1-(2-aminoethyl)-1,4,5,6-tetrahydro-5,5-dimethylcyclopenta[b]pyrrole-2-carboxylate	分子量：250.34 密度：N/A 沸点：N/A 熔点：N/A	1346674-22-3	C₁₄H₂₂N₂O₂
n-(Sec-butyl)-3-(4-fluorophenoxy)propanamide	n-(Sec-butyl)-3-(4-fluorophenoxy)propanamide	分子量：239.29 密度：N/A 沸点：N/A 熔点：N/A	1311476-50-2	C₁₃H₁₈FNO₂
5-Bromo-1-methyl-3-(5-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)pyridin-2(1H)-one	5-Bromo-1-methyl-3-(5-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)pyridin-2(1H)-one	分子量：338.20 密度：N/A 沸点：N/A 熔点：N/A	1346673-59-3	C₁₃H₁₆BrN₅O
tert-Butyl 3-(6-Aminopyridin-3-yloxy)azetidine-1-carboxylate	tert-Butyl 3-(6-Aminopyridin-3-yloxy)azetidine-1-carboxylate	分子量：265.31 密度：N/A 沸点：N/A 熔点：N/A	1346674-72-3	C₁₃H₁₉N₃O₃
Tert-Butyl 4-(6-(5-Bromo-1-methyl-2-oxo-1,2-dihydropyridin-3-ylamino)pyridin-3-yl)-3-oxopiperazine-1-carboxylate	Tert-Butyl 4-(6-(5-Bromo-1-methyl-2-oxo-1,2-dihydropyridin-3-ylamino)pyridin-3-yl)-3-oxopiperazine-1-carboxylate	分子量：478.3 密度：N/A 沸点：N/A 熔点：N/A	1346676-72-9	C₂₀H₂₄BrN₅O₄