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
N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2-(2-fluorophenoxy)propanamide	N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2-(2-fluorophenoxy)propanamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	1396847-62-3	C₂₀H₂₂FN₅O₃
(2-Fluoro-5-(isobutylcarbamoyl)phenyl)boronic acid	(2-Fluoro-5-(isobutylcarbamoyl)phenyl)boronic acid	分子量：239.05 密度：N/A 沸点：N/A 熔点：N/A	2096339-96-5	C₁₁H₁₅BFNO₃
N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)propanamide	N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)propanamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	1351630-59-5	C₁₈H₂₁N₇O₄
3(4H)-Quinazolinepropanamide, N-[2-[3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxo-1(6H)-pyridazinyl]ethyl]-4-oxo-	3(4H)-Quinazolinepropanamide, N-[2-[3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxo-1(6H)-pyridazinyl]ethyl]-4-oxo-	分子量：433.5 密度：N/A 沸点：N/A 熔点：N/A	1351647-39-6	C₂₂H₂₃N₇O₃
N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,6-difluorobenzamide	N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,6-difluorobenzamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1351604-81-3	C₁₈H₁₇F₂N₅O₂
N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,4-difluorobenzamide	N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,4-difluorobenzamide	分子量：345.30 密度：N/A 沸点：N/A 熔点：N/A	1396879-58-5	C₁₆H₁₃F₂N₅O₂
N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2-(4-chloro-3-methylphenoxy)acetamide	N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2-(4-chloro-3-methylphenoxy)acetamide	分子量：387.8 密度：N/A 沸点：N/A 熔点：N/A	1396709-89-9	C₁₈H₁₈ClN₅O₃
N-{2-[3-(1H-imidazol-1-yl)-6-oxo-1,6-dihydropyridazin-1-yl]ethyl}-1-methanesulfonylpiperidine-4-carboxamide	N-{2-[3-(1H-imidazol-1-yl)-6-oxo-1,6-dihydropyridazin-1-yl]ethyl}-1-methanesulfonylpiperidine-4-carboxamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1396791-69-7	C₁₆H₂₂N₆O₄S
3-Cyclopropoxy-N,N-dimethyl-5-nitropyridin-2-amine	3-Cyclopropoxy-N,N-dimethyl-5-nitropyridin-2-amine	分子量：223.23 密度：N/A 沸点：N/A 熔点：N/A	1243281-76-6	C₁₀H₁₃N₃O₃
3-[3-Chloro-4-(difluoromethoxy)phenyl]prop-2-enoic acid	3-[3-Chloro-4-(difluoromethoxy)phenyl]prop-2-enoic acid	分子量：248.61 密度：N/A 沸点：N/A 熔点：N/A	1251450-97-1	C₁₀H₇ClF₂O₃
N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide	N-(2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide	分子量：431.5 密度：N/A 沸点：N/A 熔点：N/A	1351610-36-0	C₁₉H₂₁N₅O₅S
N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-5-chlorothiophene-2-sulfonamide	N-(2-(3-(1H-imidazol-1-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-5-chlorothiophene-2-sulfonamide	分子量：385.9 密度：N/A 沸点：N/A 熔点：N/A	1396847-71-4	C₁₃H₁₂ClN₅O₃S₂
N-(3-Cyclopropoxy-5-isopropoxyphenyl)methanesulfonamide	N-(3-Cyclopropoxy-5-isopropoxyphenyl)methanesulfonamide	分子量：285.36 密度：N/A 沸点：N/A 熔点：N/A	1243391-98-1	C₁₃H₁₉NO₄S
2-(5-Bromo-2-furanyl)pyrrolidine	2-(5-Bromo-2-furanyl)pyrrolidine	分子量：216.07 密度：N/A 沸点：N/A 熔点：N/A	383127-34-2	C₈H₁₀BrNO
N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzo[d]thiazole-2-carboxamide	N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzo[d]thiazole-2-carboxamide	分子量：352.4 密度：N/A 沸点：N/A 熔点：N/A	1396880-45-7	C₁₆H₁₂N₆O₂S
5-Cyclopropoxy-N3,N3-dimethylpyridine-2,3-dicarboxamide	5-Cyclopropoxy-N3,N3-dimethylpyridine-2,3-dicarboxamide	分子量：249.27 密度：N/A 沸点：N/A 熔点：N/A	1243454-30-9	C₁₂H₁₅N₃O₃
4-methyl-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)thiophene-2-carboxamide	4-methyl-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)thiophene-2-carboxamide	分子量：315.35 密度：N/A 沸点：N/A 熔点：N/A	1396880-55-9	C₁₄H₁₃N₅O₂S
1-(2-methoxyphenyl)-3-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)urea	1-(2-methoxyphenyl)-3-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)urea	分子量：340.34 密度：N/A 沸点：N/A 熔点：N/A	1396798-08-5	C₁₆H₁₆N₆O₃
1-(2-methoxybenzyl)-2-methyl-1H-benzo[d]imidazole hydrochloride	1-(2-methoxybenzyl)-2-methyl-1H-benzo[d]imidazole hydrochloride	分子量：288.77 密度：N/A 沸点：N/A 熔点：N/A	1351644-16-0	C₁₆H₁₇ClN₂O
N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-phenylmethanesulfonamide	N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-phenylmethanesulfonamide	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	1396749-40-8	C₁₅H₁₅N₅O₃S
2-fluoro-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzenesulfonamide	2-fluoro-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzenesulfonamide	分子量：349.34 密度：N/A 沸点：N/A 熔点：N/A	1396847-13-4	C₁₄H₁₂FN₅O₃S
3-methoxy-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzenesulfonamide	3-methoxy-N-(4-(4-methyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzenesulfonamide	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1396683-42-3	C₁₅H₁₅N₅O₄S
4-(4-Aminopiperidin-1-yl)-3-chloropyridine	4-(4-Aminopiperidin-1-yl)-3-chloropyridine	分子量：211.69 密度：N/A 沸点：N/A 熔点：N/A	1537734-64-7	C₁₀H₁₄ClN₃
N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-(thiophen-2-yl)acetamide	N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-(thiophen-2-yl)acetamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	1396847-18-9	C₁₆H₁₇N₅O₃S
N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：361.38 密度：N/A 沸点：N/A 熔点：N/A	1396798-31-4	C₁₄H₁₅N₇O₃S
N-{4-[4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-4-(trifluoromethoxy)benzamide	N-{4-[4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-4-(trifluoromethoxy)benzamide	分子量：423.3 密度：N/A 沸点：N/A 熔点：N/A	1396711-64-0	C₁₈H₁₆F₃N₅O₄
1-(benzo[d][1,3]dioxol-5-yl)-3-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)urea	1-(benzo[d][1,3]dioxol-5-yl)-3-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)urea	分子量：398.4 密度：N/A 沸点：N/A 熔点：N/A	1396798-38-1	C₁₈H₁₈N₆O₅
3-{4-[4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-1-[3-(trifluoromethyl)phenyl]urea	3-{4-[4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-1-[3-(trifluoromethyl)phenyl]urea	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	1396806-06-6	C₁₈H₁₇F₃N₆O₃
N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)propane-1-sulfonamide	N-(4-(4-(2-methoxyethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)propane-1-sulfonamide	分子量：341.39 密度：N/A 沸点：N/A 熔点：N/A	1396881-18-7	C₁₃H₁₉N₅O₄S
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(trifluoromethyl)benzamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(trifluoromethyl)benzamide	分子量：406.32 密度：N/A 沸点：N/A 熔点：N/A	1396568-44-7	C₁₇H₁₃F₃N₆O₃
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-ethoxy-1-naphthamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-ethoxy-1-naphthamide	分子量：432.4 密度：N/A 沸点：N/A 熔点：N/A	1396815-46-5	C₂₂H₂₀N₆O₄
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-(benzylthio)acetamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-2-(benzylthio)acetamide	分子量：398.4 密度：N/A 沸点：N/A 熔点：N/A	1396683-87-6	C₁₈H₁₈N₆O₃S
N-{4-[4-(carbamoylmethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-1-(4-chlorophenyl)cyclopentane-1-carboxamide	N-{4-[4-(carbamoylmethyl)-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]phenyl}-1-(4-chlorophenyl)cyclopentane-1-carboxamide	分子量：440.9 密度：N/A 沸点：N/A 熔点：N/A	1396712-05-2	C₂₁H₂₁ClN₆O₃
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(4-fluorophenyl)-5-oxopyrrolidine-3-carboxamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(4-fluorophenyl)-5-oxopyrrolidine-3-carboxamide	分子量：439.4 密度：N/A 沸点：N/A 熔点：N/A	1396864-68-8	C₂₀H₁₈FN₇O₄
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(3,4-dimethylphenyl)-5-oxopyrrolidine-3-carboxamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(3,4-dimethylphenyl)-5-oxopyrrolidine-3-carboxamide	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	1396876-64-4	C₂₂H₂₃N₇O₄
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(4-methoxyphenyl)propanamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(4-methoxyphenyl)propanamide	分子量：396.4 密度：N/A 沸点：N/A 熔点：N/A	1396806-12-4	C₁₉H₂₀N₆O₄
N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)pyrazine-2-carboxamide	N-(4-(4-(2-amino-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)pyrazine-2-carboxamide	分子量：340.30 密度：N/A 沸点：N/A 熔点：N/A	1396847-39-4	C₁₄H₁₂N₈O₃
2-{4-[4-(3,4-dimethoxybenzenesulfonamido)phenyl]-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl}acetamide	2-{4-[4-(3,4-dimethoxybenzenesulfonamido)phenyl]-5-oxo-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl}acetamide	分子量：434.4 密度：N/A 沸点：N/A 熔点：N/A	1396881-62-1	C₁₇H₁₈N₆O₆S
2-(5-oxo-4-(4-(phenylmethylsulfonamido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	2-(5-oxo-4-(4-(phenylmethylsulfonamido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	分子量：388.4 密度：N/A 沸点：N/A 熔点：N/A	1396683-96-7	C₁₆H₁₆N₆O₄S
2-(4-(4-(5-fluoro-2-methoxyphenylsulfonamido)phenyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)acetamide	2-(4-(4-(5-fluoro-2-methoxyphenylsulfonamido)phenyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)acetamide	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	1396712-30-3	C₁₆H₁₅FN₆O₅S
4-Cyclopropoxy-5-ethylpyridine-3-sulfonamide	4-Cyclopropoxy-5-ethylpyridine-3-sulfonamide	分子量：242.30 密度：N/A 沸点：N/A 熔点：N/A	1243444-86-1	C₁₀H₁₄N₂O₃S
2-(4-fluorophenyl)-N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)acetamide	2-(4-fluorophenyl)-N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)acetamide	分子量：384.4 密度：N/A 沸点：N/A 熔点：N/A	1396751-36-2	C₁₈H₁₇FN₆O₃
N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzofuran-2-carboxamide	N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)benzofuran-2-carboxamide	分子量：392.4 密度：N/A 沸点：N/A 熔点：N/A	1396881-77-8	C₁₉H₁₆N₆O₄
3-methoxy-1-methyl-N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1H-pyrazole-4-carboxamide	3-methoxy-1-methyl-N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1H-pyrazole-4-carboxamide	分子量：386.37 密度：N/A 沸点：N/A 熔点：N/A	1396712-42-7	C₁₆H₁₈N₈O₄
N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(phenylsulfonyl)propanamide	N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-3-(phenylsulfonyl)propanamide	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	1396881-88-1	C₁₉H₂₀N₆O₅S
N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(thiophen-2-yl)cyclopentanecarboxamide	N-(4-(4-(2-(methylamino)-2-oxoethyl)-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)phenyl)-1-(thiophen-2-yl)cyclopentanecarboxamide	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1396684-04-0	C₂₀H₂₂N₆O₃S
1-(3-ethoxy-4-prop-2-enoxyphenyl)-2-(pyridin-4-ylmethyl)-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrole-3,9-dione	1-(3-ethoxy-4-prop-2-enoxyphenyl)-2-(pyridin-4-ylmethyl)-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrole-3,9-dione	分子量：474.5 密度：N/A 沸点：N/A 熔点：N/A	866237-38-9	C₂₈H₃₀N₂O₅
N-methyl-2-(5-oxo-4-(4-(3-(4-(trifluoromethyl)phenyl)ureido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	N-methyl-2-(5-oxo-4-(4-(3-(4-(trifluoromethyl)phenyl)ureido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	分子量：435.4 密度：N/A 沸点：N/A 熔点：N/A	1396847-41-8	C₁₈H₁₆F₃N₇O₃
N-cyclopropyl-2-(5-oxo-4-(4-(2-(o-tolyloxy)acetamido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	N-cyclopropyl-2-(5-oxo-4-(4-(2-(o-tolyloxy)acetamido)phenyl)-4,5-dihydro-1H-tetrazol-1-yl)acetamide	分子量：422.4 密度：N/A 沸点：N/A 熔点：N/A	1396864-83-7	C₂₁H₂₂N₆O₄
N-[4-(aminomethyl)phenyl]-6-phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine	N-[4-(aminomethyl)phenyl]-6-phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine	分子量：315.4 密度：N/A 沸点：N/A 熔点：N/A	1204400-74-7	C₁₉H₁₇N₅