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
[(2,4-Dichlorophenyl)sulfonyl]cyclohexylmethylamine	[(2,4-Dichlorophenyl)sulfonyl]cyclohexylmethylamine	分子量：322.2 密度：N/A 沸点：N/A 熔点：N/A	1110976-00-5	C₁₃H₁₇Cl₂NO₂S
n-(2-Methoxybenzyl)-3-methylbut-2-enamide	n-(2-Methoxybenzyl)-3-methylbut-2-enamide	分子量：219.28 密度：N/A 沸点：N/A 熔点：N/A	1197654-38-8	C₁₃H₁₇NO₂
N-(5-chloro-2,4-dimethoxyphenyl)-2-{4-[(2,3-dihydro-1-benzofuran-5-yl)methyl]piperazin-1-yl}acetamide	N-(5-chloro-2,4-dimethoxyphenyl)-2-{4-[(2,3-dihydro-1-benzofuran-5-yl)methyl]piperazin-1-yl}acetamide	分子量：445.9 密度：N/A 沸点：N/A 熔点：N/A	950148-90-0	C₂₃H₂₈ClN₃O₄
3-((4-(2-Hydroxyethyl)piperazin-1-yl)methyl)benzonitrile	3-((4-(2-Hydroxyethyl)piperazin-1-yl)methyl)benzonitrile	分子量：245.32 密度：N/A 沸点：N/A 熔点：N/A	1156671-85-0	C₁₄H₁₉N₃O
4-Piperidinecarboxamide, 1-(2-methyl-1-oxopropyl)-N-[4-(2-phenyldiazenyl)phenyl]-	4-Piperidinecarboxamide, 1-(2-methyl-1-oxopropyl)-N-[4-(2-phenyldiazenyl)phenyl]-	分子量：378.5 密度：N/A 沸点：N/A 熔点：N/A	1120274-50-1	C₂₂H₂₆N₄O₂
Methyl 2-({4-[4-methyl-6-(methylsulfanyl)-2-(thiophen-2-yl)pyrimidine-5-amido]phenyl}formamido)acetate	Methyl 2-({4-[4-methyl-6-(methylsulfanyl)-2-(thiophen-2-yl)pyrimidine-5-amido]phenyl}formamido)acetate	分子量：456.5 密度：N/A 沸点：N/A 熔点：N/A	1087801-93-1	C₂₁H₂₀N₄O₄S₂
3-(6-(4-Methoxyphenyl)imidazo[2,1-b]thiazol-3-yl)-1-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)propan-1-one	3-(6-(4-Methoxyphenyl)imidazo[2,1-b]thiazol-3-yl)-1-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)propan-1-one	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	1171924-25-6	C₂₂H₂₅N₃O₄S
2-(4-oxo-7-phenyl-2-(pyrrolidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)-N-(4-(trifluoromethyl)phenyl)acetamide	2-(4-oxo-7-phenyl-2-(pyrrolidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)-N-(4-(trifluoromethyl)phenyl)acetamide	分子量：499.5 密度：N/A 沸点：N/A 熔点：N/A	1105232-35-6	C₂₄H₂₀F₃N₅O₂S
N-(furan-2-ylmethyl)-2-(4-oxo-2-(piperidin-1-yl)-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	N-(furan-2-ylmethyl)-2-(4-oxo-2-(piperidin-1-yl)-7-(thiophen-2-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	分子量：455.6 密度：N/A 沸点：N/A 熔点：N/A	1105234-24-9	C₂₁H₂₁N₅O₃S₂
N-(2,4-dimethoxyphenyl)-2-(7-(furan-2-yl)-4-oxo-2-(pyrrolidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	N-(2,4-dimethoxyphenyl)-2-(7-(furan-2-yl)-4-oxo-2-(pyrrolidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	分子量：481.5 密度：N/A 沸点：N/A 熔点：N/A	1105207-11-1	C₂₃H₂₃N₅O₅S
N-(2-fluorophenyl)-2-(7-(furan-2-yl)-4-oxo-2-(piperidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	N-(2-fluorophenyl)-2-(7-(furan-2-yl)-4-oxo-2-(piperidin-1-yl)thiazolo[4,5-d]pyridazin-5(4H)-yl)acetamide	分子量：453.5 密度：N/A 沸点：N/A 熔点：N/A	1105241-34-6	C₂₂H₂₀FN₅O₃S
N-(2,5-diethoxyphenyl)-2-(3-formylphenoxy)acetamide	N-(2,5-diethoxyphenyl)-2-(3-formylphenoxy)acetamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1090911-91-3	C₁₉H₂₁NO₅
1-(4-fluorobenzyl)-2-oxo-N'-(2-(m-tolyl)acetyl)-1,2-dihydropyridine-3-carbohydrazide	1-(4-fluorobenzyl)-2-oxo-N'-(2-(m-tolyl)acetyl)-1,2-dihydropyridine-3-carbohydrazide	分子量：393.4 密度：N/A 沸点：N/A 熔点：N/A	1105243-29-5	C₂₂H₂₀FN₃O₃
N'-acetyl-1-(4-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbohydrazide	N'-acetyl-1-(4-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbohydrazide	分子量：303.29 密度：N/A 沸点：N/A 熔点：N/A	1105242-65-6	C₁₅H₁₄FN₃O₃
1-(4-fluorobenzyl)-2-oxo-N'-(2-phenoxyacetyl)-1,2-dihydropyridine-3-carbohydrazide	1-(4-fluorobenzyl)-2-oxo-N'-(2-phenoxyacetyl)-1,2-dihydropyridine-3-carbohydrazide	分子量：395.4 密度：N/A 沸点：N/A 熔点：N/A	1105242-84-9	C₂₁H₁₈FN₃O₄
3-chloro-1-(1H-imidazol-1-yl)propan-1-one	3-chloro-1-(1H-imidazol-1-yl)propan-1-one	分子量：158.58 密度：N/A 沸点：N/A 熔点：N/A	67664-95-3	C₆H₇ClN₂O
2-[benzyl(propan-2-yl)amino]-N-(1-cyanocyclopentyl)acetamide	2-[benzyl(propan-2-yl)amino]-N-(1-cyanocyclopentyl)acetamide	分子量：299.4 密度：N/A 沸点：N/A 熔点：N/A	1208879-78-0	C₁₈H₂₅N₃O
1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3-methoxyphenyl)urea	1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3-methoxyphenyl)urea	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1202974-70-6	C₁₇H₁₉N₃O₄S
1-(3-Chlorophenyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	1-(3-Chlorophenyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	分子量：365.8 密度：N/A 沸点：N/A 熔点：N/A	1203144-96-0	C₁₆H₁₆ClN₃O₃S
N-(1-cyanocyclopentyl)-2-[(2-fluoro-5-methanesulfonylphenyl)amino]acetamide	N-(1-cyanocyclopentyl)-2-[(2-fluoro-5-methanesulfonylphenyl)amino]acetamide	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	1090961-65-1	C₁₅H₁₈FN₃O₃S
1-(4-Chlorobenzyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	1-(4-Chlorobenzyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	分子量：379.9 密度：N/A 沸点：N/A 熔点：N/A	1203067-82-6	C₁₇H₁₈ClN₃O₃S
1-Benzyl-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	1-Benzyl-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	1203205-14-4	C₁₇H₁₉N₃O₃S
1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(4-methoxyphenethyl)urea	1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(4-methoxyphenethyl)urea	分子量：389.5 密度：N/A 沸点：N/A 熔点：N/A	1203003-21-7	C₁₉H₂₃N₃O₄S
1-(5-Chloro-2-methoxyphenyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	1-(5-Chloro-2-methoxyphenyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	分子量：395.9 密度：N/A 沸点：N/A 熔点：N/A	1203366-74-8	C₁₇H₁₈ClN₃O₄S
1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(2-methoxyphenyl)urea	1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(2-methoxyphenyl)urea	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1203236-30-9	C₁₇H₁₉N₃O₄S
1H-Pyrazole-3-carboxamide, 5-cyclopropyl-N-(3-propoxyphenyl)-	1H-Pyrazole-3-carboxamide, 5-cyclopropyl-N-(3-propoxyphenyl)-	分子量：285.34 密度：N/A 沸点：N/A 熔点：N/A	1257858-95-9	C₁₆H₁₉N₃O₂
N-benzyl-N-(2-methoxyethyl)-3-[[(E)-2-phenylethenyl]sulfonylamino]propanamide	N-benzyl-N-(2-methoxyethyl)-3-[[(E)-2-phenylethenyl]sulfonylamino]propanamide	分子量：402.5 密度：N/A 沸点：N/A 熔点：N/A	1097453-99-0	C₂₁H₂₆N₂O₄S
1-(3,4-Dimethoxybenzyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	1-(3,4-Dimethoxybenzyl)-3-(4-(1,1-dioxidoisothiazolidin-2-yl)phenyl)urea	分子量：405.5 密度：N/A 沸点：N/A 熔点：N/A	1203307-17-8	C₁₉H₂₃N₃O₅S
3-methyl-N-[4-(1H-pyrazol-3-yl)phenyl]butanamide	3-methyl-N-[4-(1H-pyrazol-3-yl)phenyl]butanamide	分子量：243.30 密度：N/A 沸点：N/A 熔点：N/A	1210296-42-6	C₁₄H₁₇N₃O
1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(thiophen-2-ylmethyl)urea	1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(thiophen-2-ylmethyl)urea	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	1203081-58-6	C₁₅H₁₇N₃O₃S₂
1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3-phenylpropyl)urea	1-(4-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3-phenylpropyl)urea	分子量：373.5 密度：N/A 沸点：N/A 熔点：N/A	1203080-36-7	C₁₉H₂₃N₃O₃S
1-(6-chloropyridazin-3-yl)-N-[6-(trifluoromethoxy)-1,3-benzothiazol-2-yl]piperidine-4-carboxamide	1-(6-chloropyridazin-3-yl)-N-[6-(trifluoromethoxy)-1,3-benzothiazol-2-yl]piperidine-4-carboxamide	分子量：457.9 密度：N/A 沸点：N/A 熔点：N/A	1401567-62-1	C₁₈H₁₅ClF₃N₅O₂S
2-(1-oxophthalazin-2(1H)-yl)-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-(1-oxophthalazin-2(1H)-yl)-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1310946-60-1	C₁₈H₁₃N₅O₂S
2-(1-oxophthalazin-2(1H)-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-(1-oxophthalazin-2(1H)-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1282124-07-5	C₁₈H₁₃N₅O₂S
1-(3-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3,4,5-trimethoxyphenyl)urea	1-(3-(1,1-Dioxidoisothiazolidin-2-yl)phenyl)-3-(3,4,5-trimethoxyphenyl)urea	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	1203100-01-9	C₁₉H₂₃N₃O₆S
3-amino-1-[(2R,6S)-2,6-dimethylmorpholin-4-yl]propan-1-one	3-amino-1-[(2R,6S)-2,6-dimethylmorpholin-4-yl]propan-1-one	分子量：186.25 密度：N/A 沸点：N/A 熔点：N/A	1597829-06-5	C₉H₁₈N₂O₂
6-Hydroxy-5-(2-hydroxyethyl)-2-(trifluoromethyl)-4(3H)-pyrimidinone	6-Hydroxy-5-(2-hydroxyethyl)-2-(trifluoromethyl)-4(3H)-pyrimidinone	分子量：224.14 密度：N/A 沸点：N/A 熔点：N/A	1023813-81-1	C₇H₇F₃N₂O₃
N-[2-(4-fluorophenoxy)ethyl]-9H-xanthene-9-carboxamide	N-[2-(4-fluorophenoxy)ethyl]-9H-xanthene-9-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	1105228-63-4	C₂₂H₁₈FNO₃
2-(4-acetyl-2-methoxyphenoxy)-N-[2-(4-fluorophenoxy)ethyl]acetamide	2-(4-acetyl-2-methoxyphenoxy)-N-[2-(4-fluorophenoxy)ethyl]acetamide	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1105228-79-2	C₁₉H₂₀FNO₅
2-(4-cyclopropyl-1-(3,4-dimethylphenyl)-7-oxo-1H-pyrazolo[3,4-d]pyridazin-6(7H)-yl)-N-(2-methoxyethyl)acetamide	2-(4-cyclopropyl-1-(3,4-dimethylphenyl)-7-oxo-1H-pyrazolo[3,4-d]pyridazin-6(7H)-yl)-N-(2-methoxyethyl)acetamide	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	1105203-60-8	C₂₁H₂₅N₅O₃
N-(4-(Difluoromethoxy)benzyl)quinazolin-4-amine	N-(4-(Difluoromethoxy)benzyl)quinazolin-4-amine	分子量：301.29 密度：N/A 沸点：N/A 熔点：N/A	1808407-03-5	C₁₆H₁₃F₂N₃O
8-(2-Chloro-4-nitrophenyl)-1,4-dioxa-8-azaspiro[4.5]decane	8-(2-Chloro-4-nitrophenyl)-1,4-dioxa-8-azaspiro[4.5]decane	分子量：298.72 密度：N/A 沸点：N/A 熔点：N/A	873537-28-1	C₁₃H₁₅ClN₂O₄
2-benzyl-1-(4-bromo-3-ethoxybenzenesulfonyl)-4,5-dihydro-1H-imidazole	2-benzyl-1-(4-bromo-3-ethoxybenzenesulfonyl)-4,5-dihydro-1H-imidazole	分子量：423.3 密度：N/A 沸点：N/A 熔点：N/A	1018057-51-6	C₁₈H₁₉BrN₂O₃S
2-(4-cyclopentylpiperazin-1-yl)-N-[3-(trifluoromethyl)phenyl]acetamide	2-(4-cyclopentylpiperazin-1-yl)-N-[3-(trifluoromethyl)phenyl]acetamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	2326605-76-7	C₁₈H₂₄F₃N₃O
6-chloro-N-{[6-(1H-imidazol-1-yl)pyridin-3-yl]methyl}pyridine-3-carboxamide	6-chloro-N-{[6-(1H-imidazol-1-yl)pyridin-3-yl]methyl}pyridine-3-carboxamide	分子量：313.74 密度：N/A 沸点：N/A 熔点：N/A	1090690-30-4	C₁₅H₁₂ClN₅O
4-Propyl-3-(pyridin-2-yl)-1h-pyrazol-5-amine	4-Propyl-3-(pyridin-2-yl)-1h-pyrazol-5-amine	分子量：202.26 密度：N/A 沸点：N/A 熔点：N/A	1229025-40-4	C₁₁H₁₄N₄
2-[(3-chloro-2-fluorophenyl)amino]-N-(1-cyanocyclopentyl)acetamide	2-[(3-chloro-2-fluorophenyl)amino]-N-(1-cyanocyclopentyl)acetamide	分子量：295.74 密度：N/A 沸点：N/A 熔点：N/A	1209731-78-1	C₁₄H₁₅ClFN₃O
2-(4-Ethyl-1,3-thiazol-2-yl)acetic acid	2-(4-Ethyl-1,3-thiazol-2-yl)acetic acid	分子量：171.22 密度：N/A 沸点：N/A 熔点：N/A	1181105-79-2	C₇H₉NO₂S
Methyl 2-acetyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylate	Methyl 2-acetyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylate	分子量：272.30 密度：N/A 沸点：N/A 熔点：N/A	1386087-61-1	C₁₅H₁₆N₂O₃
(2R)-1-aminohexan-2-ol	(2R)-1-aminohexan-2-ol	分子量：117.19 密度：N/A 沸点：N/A 熔点：N/A	156557-38-9	C₆H₁₅NO