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
Ethyl 2-((3-(2-(4-methoxybenzamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate	Ethyl 2-((3-(2-(4-methoxybenzamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate	分子量：443.5 密度：N/A 沸点：N/A 熔点：N/A	872996-33-3	C₂₁H₂₅N₅O₄S
(2,4-Dihydroxy-5-isopropyl-phenyl)-{4-[2-(2-methoxy-ethoxy)-ethoxy]-1,3-dihydro-isoindol-2-yl}methanone	(2,4-Dihydroxy-5-isopropyl-phenyl)-{4-[2-(2-methoxy-ethoxy)-ethoxy]-1,3-dihydro-isoindol-2-yl}methanone	分子量：415.5 密度：N/A 沸点：N/A 熔点：N/A	912999-15-6	C₂₃H₂₉NO₆
N-(2-(6-((2,4-dioxopentan-3-yl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methoxybenzamide	N-(2-(6-((2,4-dioxopentan-3-yl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methoxybenzamide	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	872996-40-2	C₂₀H₂₁N₅O₄S
4-fluoro-N-(2-(6-((2-oxo-2-(pyrrolidin-1-yl)ethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	4-fluoro-N-(2-(6-((2-oxo-2-(pyrrolidin-1-yl)ethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	897619-56-6	C₂₀H₂₁FN₆O₂S
(2,4-Dihydroxy-5-isopropylphenyl)[4-(2-dimethylaminoethoxy)-1,3-dihydroisoindol-2-yl]methanone	(2,4-Dihydroxy-5-isopropylphenyl)[4-(2-dimethylaminoethoxy)-1,3-dihydroisoindol-2-yl]methanone	分子量：384.5 密度：N/A 沸点：N/A 熔点：N/A	912999-16-7	C₂₂H₂₈N₂O₄
Pyridin-3-yl(2-(trifluoromethyl)phenyl)methanone	Pyridin-3-yl(2-(trifluoromethyl)phenyl)methanone	分子量：251.20 密度：N/A 沸点：N/A 熔点：N/A	110141-46-3	C₁₃H₈F₃NO
N-(2-(6-((2-((2-ethoxyphenyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-fluorobenzamide	N-(2-(6-((2-((2-ethoxyphenyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-fluorobenzamide	分子量：494.5 密度：N/A 沸点：N/A 熔点：N/A	897758-82-6	C₂₄H₂₃FN₆O₃S
N-(2-(6-((2-((4-acetylphenyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-fluorobenzamide	N-(2-(6-((2-((4-acetylphenyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-fluorobenzamide	分子量：492.5 密度：N/A 沸点：N/A 熔点：N/A	897619-83-9	C₂₄H₂₁FN₆O₃S
(1r,2r,4s)-Rel-7-benzyl-7-azabicyclo[2.2.1]heptan-2-ol	(1r,2r,4s)-Rel-7-benzyl-7-azabicyclo[2.2.1]heptan-2-ol	分子量：203.28 密度：N/A 沸点：N/A 熔点：N/A	152533-45-4	C₁₃H₁₇NO
4-fluoro-N-(2-(6-((2-((furan-2-ylmethyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	4-fluoro-N-(2-(6-((2-((furan-2-ylmethyl)amino)-2-oxoethyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	分子量：454.5 密度：N/A 沸点：N/A 熔点：N/A	893998-88-4	C₂₁H₁₉FN₆O₃S
4-fluoro-N-(2-(6-((3-methylbenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	4-fluoro-N-(2-(6-((3-methylbenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	897758-99-5	C₂₂H₂₀FN₅OS
4-fluoro-N-(2-(6-((4-methylbenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	4-fluoro-N-(2-(6-((4-methylbenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	897613-08-0	C₂₂H₂₀FN₅OS
5,6-dimethoxy-1H-quinolin-2-one	5,6-dimethoxy-1H-quinolin-2-one	分子量：205.21 密度：N/A 沸点：N/A 熔点：N/A	170959-00-9	C₁₁H₁₁NO₃
4-fluoro-N-(2-(6-((3-nitrobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	4-fluoro-N-(2-(6-((3-nitrobenzyl)thio)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)benzamide	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	897759-01-2	C₂₁H₁₇FN₆O₃S
Ethyl 2-((3-(2-(4-fluorobenzamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate	Ethyl 2-((3-(2-(4-fluorobenzamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate	分子量：431.5 密度：N/A 沸点：N/A 熔点：N/A	897613-14-8	C₂₀H₂₂FN₅O₃S
N-(benzo[d]thiazol-2-yl)-2-((3-(2-(4-methoxyphenylsulfonamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide	N-(benzo[d]thiazol-2-yl)-2-((3-(2-(4-methoxyphenylsulfonamido)ethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)acetamide	分子量：555.7 密度：N/A 沸点：N/A 熔点：N/A	873002-01-8	C₂₃H₂₁N₇O₄S₃
N-(2-(6-((2-methoxyphenethyl)amino)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methylbenzamide	N-(2-(6-((2-methoxyphenethyl)amino)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methylbenzamide	分子量：430.5 密度：N/A 沸点：N/A 熔点：N/A	873002-34-7	C₂₄H₂₆N₆O₂
N-(2-(6-((4-chlorobenzyl)amino)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methylbenzenesulfonamide	N-(2-(6-((4-chlorobenzyl)amino)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)ethyl)-4-methylbenzenesulfonamide	分子量：456.9 密度：N/A 沸点：N/A 熔点：N/A	873002-88-1	C₂₁H₂₁ClN₆O₂S
N-(2-(2,4-dimethylthiazol-5-yl)ethyl)-4-iodobenzenesulfonamide	N-(2-(2,4-dimethylthiazol-5-yl)ethyl)-4-iodobenzenesulfonamide	分子量：422.3 密度：N/A 沸点：N/A 熔点：N/A	873002-96-1	C₁₃H₁₅IN₂O₂S₂
N-(2-(2,4-dimethylthiazol-5-yl)ethyl)-5-ethylthiophene-2-sulfonamide	N-(2-(2,4-dimethylthiazol-5-yl)ethyl)-5-ethylthiophene-2-sulfonamide	分子量：330.5 密度：N/A 沸点：N/A 熔点：N/A	873009-86-0	C₁₃H₁₈N₂O₂S₃
L-norvaline N-benzylamide	L-norvaline N-benzylamide	分子量：206.28 密度：N/A 沸点：N/A 熔点：N/A	156801-51-3	C₁₂H₁₈N₂O
2,5-dimethoxy-N-(2-(2-(4-methoxyphenyl)-4-methylthiazol-5-yl)ethyl)benzenesulfonamide	2,5-dimethoxy-N-(2-(2-(4-methoxyphenyl)-4-methylthiazol-5-yl)ethyl)benzenesulfonamide	分子量：448.6 密度：N/A 沸点：N/A 熔点：N/A	873010-27-6	C₂₁H₂₄N₂O₅S₂
2,5-dimethoxy-N-(2-(4-methyl-2-(m-tolyl)thiazol-5-yl)ethyl)benzenesulfonamide	2,5-dimethoxy-N-(2-(4-methyl-2-(m-tolyl)thiazol-5-yl)ethyl)benzenesulfonamide	分子量：432.6 密度：N/A 沸点：N/A 熔点：N/A	873010-44-7	C₂₁H₂₄N₂O₄S₂
methyl 2-amino-3-(5-bromo-1H-indol-3-yl)propanoate hydrochloride	methyl 2-amino-3-(5-bromo-1H-indol-3-yl)propanoate hydrochloride	分子量：333.61 密度：N/A 沸点：N/A 熔点：N/A	129034-16-8	C₁₂H₁₄BrClN₂O₂
(2s,3s)-1-Tert-butyl 2-methyl 3-hydroxypyrrolidine-1,2-dicarboxylate	(2s,3s)-1-Tert-butyl 2-methyl 3-hydroxypyrrolidine-1,2-dicarboxylate	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	108998-76-1	C₁₁H₁₉NO₅
5-bromo-N-(2-(2-(3,4-dimethoxyphenyl)-4-methylthiazol-5-yl)ethyl)furan-2-carboxamide	5-bromo-N-(2-(2-(3,4-dimethoxyphenyl)-4-methylthiazol-5-yl)ethyl)furan-2-carboxamide	分子量：451.3 密度：N/A 沸点：N/A 熔点：N/A	893997-14-3	C₁₉H₁₉BrN₂O₄S
2-chloro-N-(2-(2-(4-chlorophenyl)-4-methylthiazol-5-yl)ethyl)benzamide	2-chloro-N-(2-(2-(4-chlorophenyl)-4-methylthiazol-5-yl)ethyl)benzamide	分子量：391.3 密度：N/A 沸点：N/A 熔点：N/A	897613-25-1	C₁₉H₁₆Cl₂N₂OS
4-bromo-N-(2-(2-(4-fluorophenyl)-4-methylthiazol-5-yl)ethyl)benzenesulfonamide	4-bromo-N-(2-(2-(4-fluorophenyl)-4-methylthiazol-5-yl)ethyl)benzenesulfonamide	分子量：455.4 密度：N/A 沸点：N/A 熔点：N/A	894005-16-4	C₁₈H₁₆BrFN₂O₂S₂
3-Isopropyl-2-naphthol	3-Isopropyl-2-naphthol	分子量：186.25 密度：N/A 沸点：N/A 熔点：N/A	60683-46-7	C₁₃H₁₄O
N-(2-(2-(4-fluorophenyl)-4-methylthiazol-5-yl)ethyl)-3,4-dimethoxybenzenesulfonamide	N-(2-(2-(4-fluorophenyl)-4-methylthiazol-5-yl)ethyl)-3,4-dimethoxybenzenesulfonamide	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	894006-08-7	C₂₀H₂₁FN₂O₄S₂
N-(2-(2-(4-chlorophenyl)-4-methylthiazol-5-yl)ethyl)-4-ethoxybenzenesulfonamide	N-(2-(2-(4-chlorophenyl)-4-methylthiazol-5-yl)ethyl)-4-ethoxybenzenesulfonamide	分子量：437.0 密度：N/A 沸点：N/A 熔点：N/A	894007-34-2	C₂₀H₂₁ClN₂O₃S₂
1-(2,6-Dimethylphenoxy)-3-methyl-2-butanamine	1-(2,6-Dimethylphenoxy)-3-methyl-2-butanamine	分子量：207.31 密度：N/A 沸点：N/A 熔点：N/A	256423-09-3	C₁₃H₂₁NO
methyl 2-(1,7-dimethyl-2,4-dioxo-9-(p-tolyl)-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetate	methyl 2-(1,7-dimethyl-2,4-dioxo-9-(p-tolyl)-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetate	分子量：397.4 密度：N/A 沸点：N/A 熔点：N/A	847379-93-5	C₂₀H₂₃N₅O₄
2-(9-(4-bromophenyl)-1,7-dimethyl-2,4-dioxo-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetamide	2-(9-(4-bromophenyl)-1,7-dimethyl-2,4-dioxo-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetamide	分子量：447.3 密度：N/A 沸点：N/A 熔点：N/A	876151-45-0	C₁₈H₁₉BrN₆O₃
methyl 2-[9-(4-bromophenyl)-1,7-dimethyl-2,4-dioxo-7,8-dihydro-6H-purino[7,8-a]pyrimidin-3-yl]acetate	methyl 2-[9-(4-bromophenyl)-1,7-dimethyl-2,4-dioxo-7,8-dihydro-6H-purino[7,8-a]pyrimidin-3-yl]acetate	分子量：462.3 密度：N/A 沸点：N/A 熔点：N/A	876151-46-1	C₁₉H₂₀BrN₅O₄
9-(4-bromophenyl)-1,7-dimethyl-3-(2-methylallyl)-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione	9-(4-bromophenyl)-1,7-dimethyl-3-(2-methylallyl)-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione	分子量：444.3 密度：N/A 沸点：N/A 熔点：N/A	876151-48-3	C₂₀H₂₂BrN₅O₂
9-(5-chloro-2-methylphenyl)-1,7-dimethyl-3-(4-methylbenzyl)-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione	9-(5-chloro-2-methylphenyl)-1,7-dimethyl-3-(4-methylbenzyl)-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione	分子量：464.0 密度：N/A 沸点：N/A 熔点：N/A	877617-39-5	C₂₅H₂₆ClN₅O₂
methyl 2-(9-(2,4-dimethoxyphenyl)-1,7-dimethyl-2,4-dioxo-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetate	methyl 2-(9-(2,4-dimethoxyphenyl)-1,7-dimethyl-2,4-dioxo-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetate	分子量：443.5 密度：N/A 沸点：N/A 熔点：N/A	877617-95-3	C₂₁H₂₅N₅O₆
N-(benzo[d]thiazol-2-yl)-2-((3-benzyl-4-oxo-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(benzo[d]thiazol-2-yl)-2-((3-benzyl-4-oxo-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：466.6 密度：N/A 沸点：N/A 熔点：N/A	877618-78-5	C₂₂H₁₈N₄O₂S₃
2-((3-benzyl-4-oxo-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)-N-(4-methylthiazol-2-yl)acetamide	2-((3-benzyl-4-oxo-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)-N-(4-methylthiazol-2-yl)acetamide	分子量：430.6 密度：N/A 沸点：N/A 熔点：N/A	877618-81-0	C₁₉H₁₈N₄O₂S₃
3-benzyl-2-((4-bromobenzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	3-benzyl-2-((4-bromobenzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	分子量：445.4 密度：N/A 沸点：N/A 熔点：N/A	877618-90-1	C₂₀H₁₇BrN₂OS₂
3-benzyl-2-((2-chloro-6-fluorobenzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	3-benzyl-2-((2-chloro-6-fluorobenzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	分子量：418.9 密度：N/A 沸点：N/A 熔点：N/A	877618-94-5	C₂₀H₁₆ClFN₂OS₂
N-(benzo[d][1,3]dioxol-5-ylmethyl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(benzo[d][1,3]dioxol-5-ylmethyl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：481.6 密度：N/A 沸点：N/A 熔点：N/A	877652-56-7	C₂₄H₂₃N₃O₄S₂
N-(benzo[d]thiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(benzo[d]thiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：480.6 密度：N/A 沸点：N/A 熔点：N/A	877652-62-5	C₂₃H₂₀N₄O₂S₃
N-(6-methylbenzo[d]thiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(6-methylbenzo[d]thiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：494.7 密度：N/A 沸点：N/A 熔点：N/A	877652-63-6	C₂₄H₂₂N₄O₂S₃
N-(5-(ethylthio)-1,3,4-thiadiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(5-(ethylthio)-1,3,4-thiadiazol-2-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：491.7 密度：N/A 沸点：N/A 熔点：N/A	877652-69-2	C₂₀H₂₁N₅O₂S₄
N-(5-methylisoxazol-3-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	N-(5-methylisoxazol-3-yl)-2-((4-oxo-3-phenethyl-3,4,6,7-tetrahydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	877652-71-6	C₂₀H₂₀N₄O₃S₂
2-((4-bromobenzyl)thio)-3-phenethyl-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	2-((4-bromobenzyl)thio)-3-phenethyl-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	分子量：459.4 密度：N/A 沸点：N/A 熔点：N/A	877652-80-7	C₂₁H₁₉BrN₂OS₂
2-((4-nitrobenzyl)thio)-3-phenethyl-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	2-((4-nitrobenzyl)thio)-3-phenethyl-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	分子量：425.5 密度：N/A 沸点：N/A 熔点：N/A	877652-85-2	C₂₁H₁₉N₃O₃S₂
3-phenethyl-2-((3-(trifluoromethyl)benzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	3-phenethyl-2-((3-(trifluoromethyl)benzyl)thio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one	分子量：448.5 密度：N/A 沸点：N/A 熔点：N/A	877652-96-5	C₂₂H₁₉F₃N₂OS₂