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 1-[(1-oxo-2(1H)-phthalazinyl)methyl]-4-piperidinecarboxylate	ethyl 1-[(1-oxo-2(1H)-phthalazinyl)methyl]-4-piperidinecarboxylate	分子量：315.37 密度：N/A 沸点：N/A 熔点：N/A	725703-04-8	C₁₇H₂₁N₃O₃
N-(2-(4-fluorophenoxy)ethyl)-2-oxo-2H-chromene-3-carboxamide	N-(2-(4-fluorophenoxy)ethyl)-2-oxo-2H-chromene-3-carboxamide	分子量：327.3 密度：N/A 沸点：N/A 熔点：N/A	725703-70-8	C₁₈H₁₄FNO₄
Methyl 3-[(2-fluorobenzyl)sulfanyl]propanoate	Methyl 3-[(2-fluorobenzyl)sulfanyl]propanoate	分子量：228.28 密度：N/A 沸点：N/A 熔点：N/A	725705-25-9	C₁₁H₁₃FO₂S
2-cyano-2-cyclopentylidene-N-[2-(trifluoromethyl)phenyl]acetamide	2-cyano-2-cyclopentylidene-N-[2-(trifluoromethyl)phenyl]acetamide	分子量：294.27 密度：N/A 沸点：N/A 熔点：N/A	725705-60-2	C₁₅H₁₃F₃N₂O
Tert-butyl 4-[(5-bromothiophen-2-yl)sulfonyl]piperazine-1-carboxylate	Tert-butyl 4-[(5-bromothiophen-2-yl)sulfonyl]piperazine-1-carboxylate	分子量：411.3 密度：N/A 沸点：N/A 熔点：N/A	725705-92-0	C₁₃H₁₉BrN₂O₄S₂
2-Phenoxyethyl 2-(1-(acetylcarbamothioyl)-3-oxopiperazin-2-yl)acetate	2-Phenoxyethyl 2-(1-(acetylcarbamothioyl)-3-oxopiperazin-2-yl)acetate	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	1008070-84-5	C₁₇H₂₁N₃O₅S
4-chloro-5-[(4-methylbenzyl)amino]-2-phenyl-3(2H)-pyridazinone	4-chloro-5-[(4-methylbenzyl)amino]-2-phenyl-3(2H)-pyridazinone	分子量：325.8 密度：N/A 沸点：N/A 熔点：N/A	923812-87-7	C₁₈H₁₆ClN₃O
n-Carbamoyl-2-((2-ethylphenyl)amino)propanamide	n-Carbamoyl-2-((2-ethylphenyl)amino)propanamide	分子量：235.28 密度：N/A 沸点：N/A 熔点：N/A	1097262-14-0	C₁₂H₁₇N₃O₂
(4S)-5-Acetyl-1-ethyl-3,4-dihydro-3,6-dimethyl-4-phenyl-2(1H)-pyrimidinone	(4S)-5-Acetyl-1-ethyl-3,4-dihydro-3,6-dimethyl-4-phenyl-2(1H)-pyrimidinone	分子量：272.34 密度：N/A 沸点：N/A 熔点：N/A	1013985-43-7	C₁₆H₂₀N₂O₂
(Cyclopropylcarbamoyl)(phenyl)methyl 3,5-dimethylbenzoate	(Cyclopropylcarbamoyl)(phenyl)methyl 3,5-dimethylbenzoate	分子量：323.4 密度：N/A 沸点：N/A 熔点：N/A	923840-45-3	C₂₀H₂₁NO₃
N-(benzo[d]furan-2-ylethyl)-2-[4-(4-methyl(1,3-thiazol-2-yl))phenoxy]acetamide	N-(benzo[d]furan-2-ylethyl)-2-[4-(4-methyl(1,3-thiazol-2-yl))phenoxy]acetamide	分子量：392.5 密度：N/A 沸点：N/A 熔点：N/A	920634-43-1	C₂₂H₂₀N₂O₃S
2-{[4-methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-1-(naphthalen-2-yl)ethan-1-one	2-{[4-methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-1-(naphthalen-2-yl)ethan-1-one	分子量：351.3 密度：N/A 沸点：N/A 熔点：N/A	924151-35-9	C₁₆H₁₂F₃N₃OS
2-({5-[(2-chlorophenoxy)methyl]-4-cyclopropyl-4H-1,2,4-triazol-3-yl}sulfanyl)-1-(2,6-difluorophenyl)ethan-1-one	2-({5-[(2-chlorophenoxy)methyl]-4-cyclopropyl-4H-1,2,4-triazol-3-yl}sulfanyl)-1-(2,6-difluorophenyl)ethan-1-one	分子量：435.9 密度：N/A 沸点：N/A 熔点：N/A	920622-08-8	C₂₀H₁₆ClF₂N₃O₂S
N-({5-[2-({5-methyl-[1,2,4]triazolo[4,3-a]quinolin-1-yl}sulfanyl)acetyl]furan-2-yl}methyl)acetamide	N-({5-[2-({5-methyl-[1,2,4]triazolo[4,3-a]quinolin-1-yl}sulfanyl)acetyl]furan-2-yl}methyl)acetamide	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	920667-83-0	C₂₀H₁₈N₄O₃S
5-{2-[5-Cyclopropyl-4-benzyl-1,2,4-triazol-3-ylthio]acetyl}indolin-2-one	5-{2-[5-Cyclopropyl-4-benzyl-1,2,4-triazol-3-ylthio]acetyl}indolin-2-one	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	919882-36-3	C₂₂H₂₀N₄O₂S
5-(furan-2-yl)-2-[({5-[(2-methoxyethyl)amino]-1,3,4-thiadiazol-2-yl}sulfanyl)methyl]-3H,4H-thieno[2,3-d]pyrimidin-4-one	5-(furan-2-yl)-2-[({5-[(2-methoxyethyl)amino]-1,3,4-thiadiazol-2-yl}sulfanyl)methyl]-3H,4H-thieno[2,3-d]pyrimidin-4-one	分子量：421.5 密度：N/A 沸点：N/A 熔点：N/A	920656-47-9	C₁₆H₁₅N₅O₃S₃
2-{[4-cyclopropyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N-[(2,3-dihydro-1,4-benzodioxin-6-yl)methyl]-N-methylacetamide	2-{[4-cyclopropyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N-[(2,3-dihydro-1,4-benzodioxin-6-yl)methyl]-N-methylacetamide	分子量：437.5 密度：N/A 沸点：N/A 熔点：N/A	920653-83-4	C₂₂H₂₃N₅O₃S
2-(4-chlorophenyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-1,3-thiazole-5-carboxamide	2-(4-chlorophenyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-1,3-thiazole-5-carboxamide	分子量：370.9 密度：N/A 沸点：N/A 熔点：N/A	924245-63-6	C₁₅H₁₅ClN₂O₃S₂
2-fluoro-N'-(3-fluorobenzoyl)benzohydrazide	2-fluoro-N'-(3-fluorobenzoyl)benzohydrazide	分子量：276.24 密度：N/A 沸点：N/A 熔点：N/A	923723-62-0	C₁₄H₁₀F₂N₂O₂
2-Furyl 4-[(4-hydroxy-5-phenylthiopheno[2,3-d]pyrimidin-2-yl)ethyl]piperazinyl ketone	2-Furyl 4-[(4-hydroxy-5-phenylthiopheno[2,3-d]pyrimidin-2-yl)ethyl]piperazinyl ketone	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	920807-39-2	C₂₃H₂₂N₄O₃S
2-(3,5-dimethyl-1,2-oxazol-4-yl)-N-[3-(methylsulfanyl)phenyl]acetamide	2-(3,5-dimethyl-1,2-oxazol-4-yl)-N-[3-(methylsulfanyl)phenyl]acetamide	分子量：276.36 密度：N/A 沸点：N/A 熔点：N/A	880426-82-4	C₁₄H₁₆N₂O₂S
N-(1-cyanocyclohexyl)-2-{[6-methyl-2-(propan-2-yl)pyrimidin-4-yl]sulfanyl}acetamide	N-(1-cyanocyclohexyl)-2-{[6-methyl-2-(propan-2-yl)pyrimidin-4-yl]sulfanyl}acetamide	分子量：332.5 密度：N/A 沸点：N/A 熔点：N/A	923695-33-4	C₁₇H₂₄N₄OS
N-(1-cyanocyclohexyl)-2-{thieno[3,2-d]pyrimidin-4-ylsulfanyl}propanamide	N-(1-cyanocyclohexyl)-2-{thieno[3,2-d]pyrimidin-4-ylsulfanyl}propanamide	分子量：346.5 密度：N/A 沸点：N/A 熔点：N/A	924109-16-0	C₁₆H₁₈N₄OS₂
2-(4-fluorophenyl)-4-methyl-N-(pyridin-4-ylmethyl)-1,3-thiazole-5-carboxamide	2-(4-fluorophenyl)-4-methyl-N-(pyridin-4-ylmethyl)-1,3-thiazole-5-carboxamide	分子量：327.4 密度：N/A 沸点：N/A 熔点：N/A	924192-62-1	C₁₇H₁₄FN₃OS
N-(1-propyl-1H-1,3-benzodiazol-2-yl)quinoline-2-carboxamide	N-(1-propyl-1H-1,3-benzodiazol-2-yl)quinoline-2-carboxamide	分子量：330.4 密度：N/A 沸点：N/A 熔点：N/A	919896-15-4	C₂₀H₁₈N₄O
2-[2-(Morpholin-4-yl)-1,3-thiazol-4-yl]aniline	2-[2-(Morpholin-4-yl)-1,3-thiazol-4-yl]aniline	分子量：261.34 密度：N/A 沸点：N/A 熔点：N/A	923714-34-5	C₁₃H₁₅N₃OS
2-(4-cyanophenoxy)-N-methoxyacetamide	2-(4-cyanophenoxy)-N-methoxyacetamide	分子量：206.20 密度：N/A 沸点：N/A 熔点：N/A	923233-21-0	C₁₀H₁₀N₂O₃
N-cyclopropyl-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanamide	N-cyclopropyl-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanamide	分子量：258.27 密度：N/A 沸点：N/A 熔点：N/A	923198-94-1	C₁₄H₁₄N₂O₃
2-[(4-fluorobenzyl)sulfanyl]-3-methylthieno[3,2-d]pyrimidin-4(3H)-one	2-[(4-fluorobenzyl)sulfanyl]-3-methylthieno[3,2-d]pyrimidin-4(3H)-one	分子量：306.4 密度：N/A 沸点：N/A 熔点：N/A	923878-22-2	C₁₄H₁₁FN₂OS₂
n-Carbamoyl-2-((4-ethylphenyl)amino)propanamide	n-Carbamoyl-2-((4-ethylphenyl)amino)propanamide	分子量：235.28 密度：N/A 沸点：N/A 熔点：N/A	1097262-13-9	C₁₂H₁₇N₃O₂
3-(2,3-dimethoxyphenyl)-N-(2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)propanamide	3-(2,3-dimethoxyphenyl)-N-(2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)propanamide	分子量：370.4 密度：N/A 沸点：N/A 熔点：N/A	924031-66-3	C₂₀H₂₂N₂O₅
N-(6-methoxy-1,3-benzothiazol-2-yl)thiophene-3-carboxamide	N-(6-methoxy-1,3-benzothiazol-2-yl)thiophene-3-carboxamide	分子量：290.4 密度：N/A 沸点：N/A 熔点：N/A	925552-15-4	C₁₃H₁₀N₂O₂S₂
1-(Phenylsulfonyl)-4-(2-(2-pyridyl)ethyl)piperazine	1-(Phenylsulfonyl)-4-(2-(2-pyridyl)ethyl)piperazine	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	923722-28-5	C₁₇H₂₁N₃O₂S
2-(2-Oxo-5-(trifluoromethyl)pyridin-1(2h)-yl)-N-(prop-2-yn-1-yl)acetamide	2-(2-Oxo-5-(trifluoromethyl)pyridin-1(2h)-yl)-N-(prop-2-yn-1-yl)acetamide	分子量：258.20 密度：N/A 沸点：N/A 熔点：N/A	923208-24-6	C₁₁H₉F₃N₂O₂
7-Chloro-1,2-dihydro-6-methyl-1-[4-(pentyloxy)phenyl]-2-propyl[1]benzopyrano[2,3-c]pyrrole-3,9-dione	7-Chloro-1,2-dihydro-6-methyl-1-[4-(pentyloxy)phenyl]-2-propyl[1]benzopyrano[2,3-c]pyrrole-3,9-dione	分子量：454.0 密度：N/A 沸点：N/A 熔点：N/A	882366-17-8	C₂₆H₂₈ClNO₄
Ethyl 5-(methylsulfonyl)-1H-indole-2-carboxylate	Ethyl 5-(methylsulfonyl)-1H-indole-2-carboxylate	分子量：267.30 密度：N/A 沸点：N/A 熔点：N/A	220679-12-9	C₁₂H₁₃NO₄S
2-[(4-Methoxyphenyl)amino]-3-methylbutanenitrile	2-[(4-Methoxyphenyl)amino]-3-methylbutanenitrile	分子量：204.27 密度：N/A 沸点：N/A 熔点：N/A	1186231-27-5	C₁₂H₁₆N₂O
N-(Benzyloxycarbonyl)-3-nitro-L-tyrosine	N-(Benzyloxycarbonyl)-3-nitro-L-tyrosine	分子量：360.3 密度：N/A 沸点：N/A 熔点：N/A	5106-01-4	C₁₇H₁₆N₂O₇
6-Methoxy-2-(4-Methoxyphenyl)-3-Cyanobenzo[b]thiophene	6-Methoxy-2-(4-Methoxyphenyl)-3-Cyanobenzo[b]thiophene	分子量：295.4 密度：N/A 沸点：N/A 熔点：N/A	215673-42-0	C₁₇H₁₃NO₂S
(Z)-2-cyano-N-(furan-2-ylmethyl)-3-pyridin-4-ylprop-2-enamide	(Z)-2-cyano-N-(furan-2-ylmethyl)-3-pyridin-4-ylprop-2-enamide	分子量：253.26 密度：N/A 沸点：N/A 熔点：N/A	358280-96-3	C₁₄H₁₁N₃O₂
Ethyl4-hydrazinyl-alpha,alpha-dimethylbezneacetate	Ethyl4-hydrazinyl-alpha,alpha-dimethylbezneacetate	分子量：222.28 密度：N/A 沸点：N/A 熔点：N/A	192643-90-6	C₁₂H₁₈N₂O₂
2-[3-(2-aminoethyl)-2-(3,5-dimethyl-phenyl)-1H-indol-5-yl]-2-methylpropionic acid ethyl ester	2-[3-(2-aminoethyl)-2-(3,5-dimethyl-phenyl)-1H-indol-5-yl]-2-methylpropionic acid ethyl ester	分子量：378.5 密度：N/A 沸点：N/A 熔点：N/A	192643-86-0	C₂₄H₃₀N₂O₂
2-[3-(2-tert-Butoxycarbonylaminoethyl)-2-(3,5-dimethylphenyl)-1H-indol-5-yl]-2-methylpropionic acid ethylester	2-[3-(2-tert-Butoxycarbonylaminoethyl)-2-(3,5-dimethylphenyl)-1H-indol-5-yl]-2-methylpropionic acid ethylester	分子量：478.6 密度：N/A 沸点：N/A 熔点：N/A	192644-13-6	C₂₉H₃₈N₂O₄
Benzyl 4-oxo-2-vinylpiperidine-1-carboxylate	Benzyl 4-oxo-2-vinylpiperidine-1-carboxylate	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	335266-02-9	C₁₅H₁₇NO₃
(2R)-2-Amino-3-(2-methyl-1,3-thiazol-5-yl)propanoic acid	(2R)-2-Amino-3-(2-methyl-1,3-thiazol-5-yl)propanoic acid	分子量：186.23 密度：N/A 沸点：N/A 熔点：N/A	1841222-80-7	C₇H₁₀N₂O₂S
Tert-butyl 1-(2-hydroxyethyl)hydrazinecarboxylate	Tert-butyl 1-(2-hydroxyethyl)hydrazinecarboxylate	分子量：176.21 密度：N/A 沸点：N/A 熔点：N/A	114897-60-8	C₇H₁₆N₂O₃
2-{[(4-methoxyphenoxy)acetyl]amino}-N-(pyridin-3-ylmethyl)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxamide	2-{[(4-methoxyphenoxy)acetyl]amino}-N-(pyridin-3-ylmethyl)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxamide	分子量：437.5 密度：N/A 沸点：N/A 熔点：N/A	882391-66-4	C₂₃H₂₃N₃O₄S
10,11-Didehydrocinchonidine	10,11-Didehydrocinchonidine	分子量：292.4 密度：N/A 沸点：N/A 熔点：N/A	157253-80-0	C₁₉H₂₀N₂O
1'-(3-Phenoxypropyl)spiro[[1,3]dioxane-2,3'-indolin]-2'-one	1'-(3-Phenoxypropyl)spiro[[1,3]dioxane-2,3'-indolin]-2'-one	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	882381-88-6	C₂₀H₂₁NO₄
N1-[[3,5-Dichloro-2-[(4-methylphenyl)methoxy]phenyl]methyl]-1H-tetrazole-1,5-diamine	N1-[[3,5-Dichloro-2-[(4-methylphenyl)methoxy]phenyl]methyl]-1H-tetrazole-1,5-diamine	分子量：379.2 密度：N/A 沸点：N/A 熔点：N/A	884990-83-4	C₁₆H₁₆Cl₂N₆O