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-acetamido-N-(2-(3-(tert-butyl)ureido)ethyl)benzamide	4-acetamido-N-(2-(3-(tert-butyl)ureido)ethyl)benzamide	分子量：320.39 密度：N/A 沸点：N/A 熔点：N/A	1170623-57-0	C₁₆H₂₄N₄O₃
5,6-Difluoro-2-methylsulfanyl-benzothiazole	5,6-Difluoro-2-methylsulfanyl-benzothiazole	分子量：217.3 密度：N/A 沸点：N/A 熔点：N/A	1163123-55-4	C₈H₅F₂NS₂
4-acetamido-N-(2-(3-(4-methoxybenzyl)ureido)ethyl)benzamide	4-acetamido-N-(2-(3-(4-methoxybenzyl)ureido)ethyl)benzamide	分子量：384.4 密度：N/A 沸点：N/A 熔点：N/A	1171473-28-1	C₂₀H₂₄N₄O₄
4-acetamido-N-(2-(3-(4-(tert-butyl)phenyl)ureido)ethyl)benzamide	4-acetamido-N-(2-(3-(4-(tert-butyl)phenyl)ureido)ethyl)benzamide	分子量：396.5 密度：N/A 沸点：N/A 熔点：N/A	1170539-21-5	C₂₂H₂₈N₄O₃
4-acetamido-N-(2-(3-(thiophen-2-yl)ureido)ethyl)benzamide	4-acetamido-N-(2-(3-(thiophen-2-yl)ureido)ethyl)benzamide	分子量：346.4 密度：N/A 沸点：N/A 熔点：N/A	1171794-48-1	C₁₆H₁₈N₄O₃S
N-(2-(3-(benzo[d][1,3]dioxol-5-yl)ureido)ethyl)-4-propionamidobenzamide	N-(2-(3-(benzo[d][1,3]dioxol-5-yl)ureido)ethyl)-4-propionamidobenzamide	分子量：398.4 密度：N/A 沸点：N/A 熔点：N/A	1170843-84-1	C₂₀H₂₂N₄O₅
1-(4-Fluoro-2-nitrophenyl)piperidin-3-ol	1-(4-Fluoro-2-nitrophenyl)piperidin-3-ol	分子量：240.23 密度：N/A 沸点：N/A 熔点：N/A	1386140-00-6	C₁₁H₁₃FN₂O₃
N-(2-(3-(2,5-difluorophenyl)ureido)ethyl)-4-propionamidobenzamide	N-(2-(3-(2,5-difluorophenyl)ureido)ethyl)-4-propionamidobenzamide	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	1173044-33-1	C₁₉H₂₀F₂N₄O₃
N-(2-(3-(4-fluorobenzyl)ureido)ethyl)-4-propionamidobenzamide	N-(2-(3-(4-fluorobenzyl)ureido)ethyl)-4-propionamidobenzamide	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	1171374-17-6	C₂₀H₂₃FN₄O₃
1-Ethyl-5-fluoro-3-(2-oxo-1-pyrrolidinyl)-N-(2-pyridinylmethyl)-1H-indole-2-carboxamide	1-Ethyl-5-fluoro-3-(2-oxo-1-pyrrolidinyl)-N-(2-pyridinylmethyl)-1H-indole-2-carboxamide	分子量：380.4 密度：N/A 沸点：N/A 熔点：N/A	1031672-02-2	C₂₁H₂₁FN₄O₂
4-(cyclopropanecarboxamido)-N-(2-(3-(2-ethylphenyl)ureido)ethyl)benzamide	4-(cyclopropanecarboxamido)-N-(2-(3-(2-ethylphenyl)ureido)ethyl)benzamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1170789-77-1	C₂₂H₂₆N₄O₃
4-(cyclopropanecarboxamido)-N-(2-(3-(2,3-dimethoxyphenyl)ureido)ethyl)benzamide	4-(cyclopropanecarboxamido)-N-(2-(3-(2,3-dimethoxyphenyl)ureido)ethyl)benzamide	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1170489-37-8	C₂₂H₂₆N₄O₅
1,4,5,6-Tetrahydrobenzo[d]cyclopent[b]azepin-3(2H)-one	1,4,5,6-Tetrahydrobenzo[d]cyclopent[b]azepin-3(2H)-one	分子量：199.25 密度：N/A 沸点：N/A 熔点：N/A	1238587-69-3	C₁₃H₁₃NO
4-(cyclopropanecarboxamido)-N-(2-(3-(thiophen-2-yl)ureido)ethyl)benzamide	4-(cyclopropanecarboxamido)-N-(2-(3-(thiophen-2-yl)ureido)ethyl)benzamide	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	1172319-85-5	C₁₈H₂₀N₄O₃S
1-(3-Bromo-4-methoxyphenyl)-2-(cyclopentylmethylamino)ethanone	1-(3-Bromo-4-methoxyphenyl)-2-(cyclopentylmethylamino)ethanone	分子量：326.23 密度：N/A 沸点：N/A 熔点：N/A	1157720-02-9	C₁₅H₂₀BrNO₂
4-(cyclopentanecarboxamido)-N-(2-(3-phenylureido)ethyl)benzamide	4-(cyclopentanecarboxamido)-N-(2-(3-phenylureido)ethyl)benzamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1172480-22-6	C₂₂H₂₆N₄O₃
4-(cyclopentanecarboxamido)-N-(2-(3-(3,4-difluorophenyl)ureido)ethyl)benzamide	4-(cyclopentanecarboxamido)-N-(2-(3-(3,4-difluorophenyl)ureido)ethyl)benzamide	分子量：430.4 密度：N/A 沸点：N/A 熔点：N/A	1170005-99-8	C₂₂H₂₄F₂N₄O₃
4-(cyclopentanecarboxamido)-N-(2-(3-(4-ethoxyphenyl)ureido)ethyl)benzamide	4-(cyclopentanecarboxamido)-N-(2-(3-(4-ethoxyphenyl)ureido)ethyl)benzamide	分子量：438.5 密度：N/A 沸点：N/A 熔点：N/A	1170210-78-2	C₂₄H₃₀N₄O₄
4-(cyclopentanecarboxamido)-N-(2-(3-(2-methoxy-5-methylphenyl)ureido)ethyl)benzamide	4-(cyclopentanecarboxamido)-N-(2-(3-(2-methoxy-5-methylphenyl)ureido)ethyl)benzamide	分子量：438.5 密度：N/A 沸点：N/A 熔点：N/A	1172574-80-9	C₂₄H₃₀N₄O₄
N-(2-(3-cyclohexylureido)ethyl)-4-pivalamidobenzamide	N-(2-(3-cyclohexylureido)ethyl)-4-pivalamidobenzamide	分子量：388.5 密度：N/A 沸点：N/A 熔点：N/A	1171959-81-1	C₂₁H₃₂N₄O₃
N-(2-{[(2-chlorophenyl)carbamoyl]amino}ethyl)-4-(2,2-dimethylpropanamido)benzamide	N-(2-{[(2-chlorophenyl)carbamoyl]amino}ethyl)-4-(2,2-dimethylpropanamido)benzamide	分子量：416.9 密度：N/A 沸点：N/A 熔点：N/A	1171534-47-6	C₂₁H₂₅ClN₄O₃
N-(2-(3-(3,5-dimethoxyphenyl)ureido)ethyl)-4-pivalamidobenzamide	N-(2-(3-(3,5-dimethoxyphenyl)ureido)ethyl)-4-pivalamidobenzamide	分子量：442.5 密度：N/A 沸点：N/A 熔点：N/A	1169961-65-2	C₂₃H₃₀N₄O₅
2-(2,4-dichlorophenoxy)-N-[2-(4-fluorophenoxy)ethyl]propanamide	2-(2,4-dichlorophenoxy)-N-[2-(4-fluorophenoxy)ethyl]propanamide	分子量：372.2 密度：N/A 沸点：N/A 熔点：N/A	1105227-59-5	C₁₇H₁₆Cl₂FNO₃
2-(benzo[d][1,3]dioxol-5-yloxy)-N-(2-(4-fluorophenoxy)ethyl)propanamide	2-(benzo[d][1,3]dioxol-5-yloxy)-N-(2-(4-fluorophenoxy)ethyl)propanamide	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	1105209-55-9	C₁₈H₁₈FNO₅
N-[2-(3,5-dimethylphenoxy)ethyl]-2-(3-fluorophenoxy)propanamide	N-[2-(3,5-dimethylphenoxy)ethyl]-2-(3-fluorophenoxy)propanamide	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	1105210-98-7	C₁₉H₂₂FNO₃
2-(2-fluorophenoxy)-N-(2-(3-(trifluoromethyl)phenoxy)ethyl)propanamide	2-(2-fluorophenoxy)-N-(2-(3-(trifluoromethyl)phenoxy)ethyl)propanamide	分子量：371.3 密度：N/A 沸点：N/A 熔点：N/A	1105211-53-7	C₁₈H₁₇F₄NO₃
N-(2-(benzo[d][1,3]dioxol-5-yloxy)ethyl)-2-(2-fluorophenoxy)propanamide	N-(2-(benzo[d][1,3]dioxol-5-yloxy)ethyl)-2-(2-fluorophenoxy)propanamide	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	1172336-79-6	C₁₈H₁₈FNO₅
1-(4-(Tert-butyl)phenyl)-3-(2-phenoxyethyl)urea	1-(4-(Tert-butyl)phenyl)-3-(2-phenoxyethyl)urea	分子量：312.4 密度：N/A 沸点：N/A 熔点：N/A	1172326-67-8	C₁₉H₂₄N₂O₂
1-(2-Phenoxyethyl)-3-(thiophen-2-yl)urea	1-(2-Phenoxyethyl)-3-(thiophen-2-yl)urea	分子量：262.33 密度：N/A 沸点：N/A 熔点：N/A	1170828-78-0	C₁₃H₁₄N₂O₂S
1-(5-Chloro-2-methoxyphenyl)-3-(2-(4-fluorophenoxy)ethyl)urea	1-(5-Chloro-2-methoxyphenyl)-3-(2-(4-fluorophenoxy)ethyl)urea	分子量：338.76 密度：N/A 沸点：N/A 熔点：N/A	1172909-76-0	C₁₆H₁₆ClFN₂O₃
1-(2-(3,5-Dimethylphenoxy)ethyl)-3-(4-fluorobenzyl)urea	1-(2-(3,5-Dimethylphenoxy)ethyl)-3-(4-fluorobenzyl)urea	分子量：316.4 密度：N/A 沸点：N/A 熔点：N/A	1171017-10-9	C₁₈H₂₁FN₂O₂
1-acetyl-N-(2-(4-ethoxyphenoxy)ethyl)-2-methylindoline-5-sulfonamide	1-acetyl-N-(2-(4-ethoxyphenoxy)ethyl)-2-methylindoline-5-sulfonamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1105204-68-9	C₂₁H₂₆N₂O₅S
1-acetyl-N-(2-(benzo[d][1,3]dioxol-5-yloxy)ethyl)-2-methylindoline-5-sulfonamide	1-acetyl-N-(2-(benzo[d][1,3]dioxol-5-yloxy)ethyl)-2-methylindoline-5-sulfonamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1105235-45-7	C₂₀H₂₂N₂O₆S
4-(3,4-dimethylbenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(3,4-dimethylbenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：306.4 密度：N/A 沸点：N/A 熔点：N/A	1021108-02-0	C₁₉H₁₈N₂O₂
4-(3-fluorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(3-fluorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：296.29 密度：N/A 沸点：N/A 熔点：N/A	129228-83-7	C₁₇H₁₃FN₂O₂
4-(3,4-difluorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(3,4-difluorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：314.29 密度：N/A 沸点：N/A 熔点：N/A	1021026-93-6	C₁₇H₁₂F₂N₂O₂
4-(3-chlorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(3-chlorobenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：312.7 密度：N/A 沸点：N/A 熔点：N/A	78666-11-2	C₁₇H₁₃ClN₂O₂
4-(4-ethoxybenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(4-ethoxybenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：322.4 密度：N/A 沸点：N/A 熔点：N/A	1021137-14-3	C₁₉H₁₈N₂O₃
4-(3,5-dimethylbenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	4-(3,5-dimethylbenzoyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one	分子量：306.4 密度：N/A 沸点：N/A 熔点：N/A	1021026-94-7	C₁₉H₁₈N₂O₂
3-methyl-1-phenyl-4-(4-(pyrrolidin-1-ylsulfonyl)benzoyl)-1H-pyrazol-5(4H)-one	3-methyl-1-phenyl-4-(4-(pyrrolidin-1-ylsulfonyl)benzoyl)-1H-pyrazol-5(4H)-one	分子量：411.5 密度：N/A 沸点：N/A 熔点：N/A	1021026-96-9	C₂₁H₂₁N₃O₄S
3-methyl-1-phenyl-4-(4-(piperidin-1-ylsulfonyl)benzoyl)-1H-pyrazol-5(4H)-one	3-methyl-1-phenyl-4-(4-(piperidin-1-ylsulfonyl)benzoyl)-1H-pyrazol-5(4H)-one	分子量：425.5 密度：N/A 沸点：N/A 熔点：N/A	1021062-49-6	C₂₂H₂₃N₃O₄S
4-(3-methoxybenzoyl)-1,3-diphenyl-1H-pyrazol-5(4H)-one	4-(3-methoxybenzoyl)-1,3-diphenyl-1H-pyrazol-5(4H)-one	分子量：370.4 密度：N/A 沸点：N/A 熔点：N/A	1021026-98-1	C₂₃H₁₈N₂O₃
2-(4-oxo-2-sulfanylidene-1H-thieno[3,2-d]pyrimidin-3-yl)propanamide	2-(4-oxo-2-sulfanylidene-1H-thieno[3,2-d]pyrimidin-3-yl)propanamide	分子量：255.3 密度：N/A 沸点：N/A 熔点：N/A	1218298-60-2	C₉H₉N₃O₂S₂
1-(4-chlorophenyl)-4-(4-methoxyphenethyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	1-(4-chlorophenyl)-4-(4-methoxyphenethyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：434.9 密度：N/A 沸点：N/A 熔点：N/A	1040693-92-2	C₂₁H₂₃ClN₂O₄S
4-(3,4-dimethoxyphenethyl)-1-phenylhexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	4-(3,4-dimethoxyphenethyl)-1-phenylhexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：430.5 密度：N/A 沸点：N/A 熔点：N/A	1049535-78-5	C₂₂H₂₆N₂O₅S
1-(4-methoxyphenyl)-4-(2-(thiophen-2-yl)ethyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	1-(4-methoxyphenyl)-4-(2-(thiophen-2-yl)ethyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	1049536-06-2	C₁₉H₂₂N₂O₄S₂
4-(2-fluorophenethyl)-1-(4-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	4-(2-fluorophenethyl)-1-(4-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1049500-35-7	C₂₁H₂₃FN₂O₄S
4-(4-fluorophenethyl)-1-(4-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	4-(4-fluorophenethyl)-1-(4-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1049536-10-8	C₂₁H₂₃FN₂O₄S
1-(4-methoxyphenyl)-4-(3-phenylpropyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	1-(4-methoxyphenyl)-4-(3-phenylpropyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1049500-49-3	C₂₂H₂₆N₂O₄S
4-benzyl-1-(3-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	4-benzyl-1-(3-methoxyphenyl)hexahydrothieno[3,4-b]pyrazin-2(1H)-one 6,6-dioxide	分子量：386.5 密度：N/A 沸点：N/A 熔点：N/A	1049536-30-2	C₂₀H₂₂N₂O₄S