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
methyl [3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetate	methyl [3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetate	分子量：292.26 密度：N/A 沸点：N/A 熔点：N/A	1232794-01-2	C₁₄H₁₃FN₂O₄
(4-Hydroxy-6-methoxyquinolin-3-yl)(4-phenylpiperazin-1-yl)methanone	(4-Hydroxy-6-methoxyquinolin-3-yl)(4-phenylpiperazin-1-yl)methanone	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1232808-33-1	C₂₁H₂₁N₃O₃
N-[5-(acetylamino)-2-methoxyphenyl]-4-oxo-1,4-dihydroquinoline-3-carboxamide	N-[5-(acetylamino)-2-methoxyphenyl]-4-oxo-1,4-dihydroquinoline-3-carboxamide	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	873052-64-3	C₁₉H₁₇N₃O₄
6-fluoro-4-hydroxy-N-(4-sulfamoylphenyl)quinoline-3-carboxamide	6-fluoro-4-hydroxy-N-(4-sulfamoylphenyl)quinoline-3-carboxamide	分子量：361.3 密度：N/A 沸点：N/A 熔点：N/A	1224169-72-5	C₁₆H₁₂FN₃O₄S
4-(3-ethyl-1,2,4-oxadiazol-5-yl)quinolin-2(1H)-one	4-(3-ethyl-1,2,4-oxadiazol-5-yl)quinolin-2(1H)-one	分子量：241.24 密度：N/A 沸点：N/A 熔点：N/A	1325306-30-6	C₁₃H₁₁N₃O₂
4-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)quinolin-2(1H)-one	4-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)quinolin-2(1H)-one	分子量：253.26 密度：N/A 沸点：N/A 熔点：N/A	1325304-16-2	C₁₄H₁₁N₃O₂
N-(3-chloro-4-methoxyphenyl)-2-([1,2,4]triazolo[4,3-b]pyridazin-6-ylsulfanyl)acetamide	N-(3-chloro-4-methoxyphenyl)-2-([1,2,4]triazolo[4,3-b]pyridazin-6-ylsulfanyl)acetamide	分子量：349.8 密度：N/A 沸点：N/A 熔点：N/A	1224168-82-4	C₁₄H₁₂ClN₅O₂S
N-(2-carbamoylphenyl)-4-hydroxy-8-methoxyquinoline-3-carboxamide	N-(2-carbamoylphenyl)-4-hydroxy-8-methoxyquinoline-3-carboxamide	分子量：337.3 密度：N/A 沸点：N/A 熔点：N/A	1232801-54-5	C₁₈H₁₅N₃O₄
N-cycloheptyl-2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-cycloheptyl-2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：385.5 密度：N/A 沸点：N/A 熔点：N/A	1232801-12-5	C₂₁H₂₇N₃O₄
2-(3-(4-(3-chlorophenyl)piperazin-1-yl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-3-yl)acetamide	2-(3-(4-(3-chlorophenyl)piperazin-1-yl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-3-yl)acetamide	分子量：424.9 密度：N/A 沸点：N/A 熔点：N/A	1232808-59-1	C₂₁H₂₁ClN₆O₂
1-(2-methoxyphenyl)-5-(pyridin-2-yl)-1H-1,2,3-triazole-4-carboxylic acid	1-(2-methoxyphenyl)-5-(pyridin-2-yl)-1H-1,2,3-triazole-4-carboxylic acid	分子量：296.28 密度：N/A 沸点：N/A 熔点：N/A	1326927-55-2	C₁₅H₁₂N₄O₃
2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-phenoxyphenyl)acetamide	2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(4-phenoxyphenyl)acetamide	分子量：415.4 密度：N/A 沸点：N/A 熔点：N/A	1232786-87-6	C₂₄H₁₈FN₃O₃
N-[5-(acetylamino)-2-methoxyphenyl]-6-chloro-4-oxo-1,4-dihydroquinoline-3-carboxamide	N-[5-(acetylamino)-2-methoxyphenyl]-6-chloro-4-oxo-1,4-dihydroquinoline-3-carboxamide	分子量：385.8 密度：N/A 沸点：N/A 熔点：N/A	1232790-62-3	C₁₉H₁₆ClN₃O₄
5-(1H-pyrrol-1-yl)-1-[4-(trifluoromethoxy)phenyl]-1H-pyrazole-4-carboxylic acid	5-(1H-pyrrol-1-yl)-1-[4-(trifluoromethoxy)phenyl]-1H-pyrazole-4-carboxylic acid	分子量：337.25 密度：N/A 沸点：N/A 熔点：N/A	1232794-76-1	C₁₅H₁₀F₃N₃O₃
2-[acetyl(tetrahydro-2-furanylmethyl)amino]-N-[2-(1H-imidazol-4-yl)ethyl]-4-methyl-1,3-thiazole-5-carboxamide	2-[acetyl(tetrahydro-2-furanylmethyl)amino]-N-[2-(1H-imidazol-4-yl)ethyl]-4-methyl-1,3-thiazole-5-carboxamide	分子量：377.5 密度：N/A 沸点：N/A 熔点：N/A	1224156-95-9	C₁₇H₂₃N₅O₃S
2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2E)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2E)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1232822-40-0	C₁₅H₁₃N₅O₃S
1-({2-[Acetyl(tetrahydrofuran-2-ylmethyl)amino]-4-methyl-1,3-thiazol-5-yl}carbonyl)piperidine-4-carboxamide	1-({2-[Acetyl(tetrahydrofuran-2-ylmethyl)amino]-4-methyl-1,3-thiazol-5-yl}carbonyl)piperidine-4-carboxamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1224162-44-0	C₁₈H₂₆N₄O₄S
6-(3-methoxyphenyl)-2-(2-oxopropyl)pyridazin-3(2H)-one	6-(3-methoxyphenyl)-2-(2-oxopropyl)pyridazin-3(2H)-one	分子量：258.27 密度：N/A 沸点：N/A 熔点：N/A	1232788-80-5	C₁₄H₁₄N₂O₃
6-(2-chlorophenyl)-2-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-oxoethyl]pyridazin-3(2H)-one	6-(2-chlorophenyl)-2-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-oxoethyl]pyridazin-3(2H)-one	分子量：382.8 密度：N/A 沸点：N/A 熔点：N/A	1224166-28-2	C₂₀H₁₅ClN₂O₄
N-[3-(acetylamino)phenyl]-2-(benzylamino)-1,3-thiazole-4-carboxamide	N-[3-(acetylamino)phenyl]-2-(benzylamino)-1,3-thiazole-4-carboxamide	分子量：366.4 密度：N/A 沸点：N/A 熔点：N/A	1232792-51-6	C₁₉H₁₈N₄O₂S
(6-Fluoro-4-hydroxyquinolin-3-yl)(4-phenylpiperazin-1-yl)methanone	(6-Fluoro-4-hydroxyquinolin-3-yl)(4-phenylpiperazin-1-yl)methanone	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	1224168-09-5	C₂₀H₁₈FN₃O₂
3-[3-(2,5-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]propanoic acid	3-[3-(2,5-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]propanoic acid	分子量：304.30 密度：N/A 沸点：N/A 熔点：N/A	1225973-06-7	C₁₅H₁₆N₂O₅
N-(3-chloro-4-fluorophenyl)-2-(3-(2-fluorophenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(3-chloro-4-fluorophenyl)-2-(3-(2-fluorophenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：375.8 密度：N/A 沸点：N/A 熔点：N/A	1232792-38-9	C₁₈H₁₂ClF₂N₃O₂
3,5-dimethoxy-N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]benzamide	3,5-dimethoxy-N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]benzamide	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	1224169-96-3	C₁₈H₁₉N₃O₄
N-(1H-benzimidazol-2-yl)-4-{4-[(4-fluorophenyl)sulfonyl]piperazin-1-yl}-4-oxobutanamide	N-(1H-benzimidazol-2-yl)-4-{4-[(4-fluorophenyl)sulfonyl]piperazin-1-yl}-4-oxobutanamide	分子量：459.5 密度：N/A 沸点：N/A 熔点：N/A	1232784-17-6	C₂₁H₂₂FN₅O₄S
3-(3,4-Dimethylphenyl)-1-(morpholin-4-yl)propane-1-thione	3-(3,4-Dimethylphenyl)-1-(morpholin-4-yl)propane-1-thione	分子量：263.4 密度：N/A 沸点：N/A 熔点：N/A	1326878-07-2	C₁₅H₂₁NOS
6-(4-fluoro-2-methoxyphenyl)-2-[2-oxo-2-(1-pyrrolidinyl)ethyl]-3(2H)-pyridazinone	6-(4-fluoro-2-methoxyphenyl)-2-[2-oxo-2-(1-pyrrolidinyl)ethyl]-3(2H)-pyridazinone	分子量：331.34 密度：N/A 沸点：N/A 熔点：N/A	1232795-25-3	C₁₇H₁₈FN₃O₃
N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)acetamide	N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)acetamide	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1224160-43-3	C₂₀H₂₀FN₃O₂
N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]-2-phenoxyacetamide	N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]-2-phenoxyacetamide	分子量：311.33 密度：N/A 沸点：N/A 熔点：N/A	1232794-85-2	C₁₇H₁₇N₃O₃
6-(2-fluoro-4-methoxyphenyl)-2-(2-(4-(4-methoxyphenyl)piperazin-1-yl)-2-oxoethyl)pyridazin-3(2H)-one	6-(2-fluoro-4-methoxyphenyl)-2-(2-(4-(4-methoxyphenyl)piperazin-1-yl)-2-oxoethyl)pyridazin-3(2H)-one	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	1232802-77-5	C₂₄H₂₅FN₄O₄
1-[4-(1,2-Benzothiazol-3-yl)piperazin-1-yl]-4-(thiomorpholin-4-yl)butane-1,4-dione	1-[4-(1,2-Benzothiazol-3-yl)piperazin-1-yl]-4-(thiomorpholin-4-yl)butane-1,4-dione	分子量：404.6 密度：N/A 沸点：N/A 熔点：N/A	1232790-68-9	C₁₉H₂₄N₄O₂S₂
N-[(2E)-5-benzyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[(2E)-5-benzyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：421.4 密度：N/A 沸点：N/A 熔点：N/A	1224173-28-7	C₂₁H₁₆FN₅O₂S
2-(3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-methoxypropyl)acetamide	2-(3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-methoxypropyl)acetamide	分子量：349.4 密度：N/A 沸点：N/A 熔点：N/A	1232770-94-3	C₁₇H₂₀FN₃O₄
3,4-dichloro-N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]benzamide	3,4-dichloro-N-[2-(methoxymethyl)-1H-benzimidazol-5-yl]benzamide	分子量：350.2 密度：N/A 沸点：N/A 熔点：N/A	1232785-23-7	C₁₆H₁₃Cl₂N₃O₂
2-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(6-methylpyridin-2-yl)acetamide	2-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(6-methylpyridin-2-yl)acetamide	分子量：350.4 密度：N/A 沸点：N/A 熔点：N/A	1232806-33-5	C₁₉H₁₈N₄O₃
2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-methylpyridin-2-yl)acetamide	2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(3-methylpyridin-2-yl)acetamide	分子量：338.3 密度：N/A 沸点：N/A 熔点：N/A	1232785-67-9	C₁₈H₁₅FN₄O₂
N-[4-(acetylamino)phenyl]-2-[(3-ethyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)sulfanyl]acetamide	N-[4-(acetylamino)phenyl]-2-[(3-ethyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)sulfanyl]acetamide	分子量：370.4 密度：N/A 沸点：N/A 熔点：N/A	1232782-94-3	C₁₇H₁₈N₆O₂S
2-[3-(2-fluorophenyl)-6-oxopyridazin-1(6H)-yl]-N-(1,3-thiazol-2-yl)acetamide	2-[3-(2-fluorophenyl)-6-oxopyridazin-1(6H)-yl]-N-(1,3-thiazol-2-yl)acetamide	分子量：330.3 密度：N/A 沸点：N/A 熔点：N/A	1224169-54-3	C₁₅H₁₁FN₄O₂S
2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	1224173-31-2	C₂₁H₂₅N₇O₂S
ethyl 4-{[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}piperazine-1-carboxylate	ethyl 4-{[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}piperazine-1-carboxylate	分子量：418.4 密度：N/A 沸点：N/A 熔点：N/A	1232800-06-4	C₂₀H₂₃FN₄O₅
N-(2-fluorobenzyl)-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	N-(2-fluorobenzyl)-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	分子量：408.4 密度：N/A 沸点：N/A 熔点：N/A	1326822-55-2	C₂₂H₁₈F₂N₄O₂
5-{4-[(4-fluorophenyl)sulfonyl]piperazin-1-yl}-N-[(2E)-5-methyl-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopentanamide	5-{4-[(4-fluorophenyl)sulfonyl]piperazin-1-yl}-N-[(2E)-5-methyl-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopentanamide	分子量：455.5 密度：N/A 沸点：N/A 熔点：N/A	1224173-10-7	C₁₈H₂₂FN₅O₄S₂
N-benzyl-2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]acetamide	N-benzyl-2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]acetamide	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	1215790-77-4	C₂₃H₂₅N₅O₂
2-[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-(pyridin-3-ylmethyl)acetamide	2-[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-(pyridin-3-ylmethyl)acetamide	分子量：368.4 密度：N/A 沸点：N/A 熔点：N/A	1232805-28-5	C₁₉H₁₇FN₄O₃
N-(4-fluorobenzyl)-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	N-(4-fluorobenzyl)-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	分子量：408.4 密度：N/A 沸点：N/A 熔点：N/A	1326845-64-0	C₂₂H₁₈F₂N₄O₂
N-[1-(4-fluorophenyl)ethyl]-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	N-[1-(4-fluorophenyl)ethyl]-3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]propanamide	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	1326845-74-2	C₂₃H₂₀F₂N₄O₂
N~1~-[2-(1H-indol-3-yl)ethyl]-4-oxo-4-[4-(2-pyridyl)piperazino]butanamide	N~1~-[2-(1H-indol-3-yl)ethyl]-4-oxo-4-[4-(2-pyridyl)piperazino]butanamide	分子量：405.5 密度：N/A 沸点：N/A 熔点：N/A	1232782-34-1	C₂₃H₂₇N₅O₂
2-[2-(1-acetyl-2,3-dihydro-1H-indol-5-yl)-2-oxoethyl]-6-(thiophen-2-yl)pyridazin-3(2H)-one	2-[2-(1-acetyl-2,3-dihydro-1H-indol-5-yl)-2-oxoethyl]-6-(thiophen-2-yl)pyridazin-3(2H)-one	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	1232806-50-6	C₂₀H₁₇N₃O₃S
3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-[2-(thiophen-2-yl)ethyl]propanamide	3-[2-(4-fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-[2-(thiophen-2-yl)ethyl]propanamide	分子量：410.5 密度：N/A 沸点：N/A 熔点：N/A	1326905-03-6	C₂₁H₁₉FN₄O₂S
2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]-N-(pyridin-3-ylmethyl)acetamide	2-[6-oxo-3-(4-phenylpiperazin-1-yl)pyridazin-1(6H)-yl]-N-(pyridin-3-ylmethyl)acetamide	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	1189467-28-4	C₂₂H₂₄N₆O₂