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-{[(tert-butoxy)carbonyl]amino}-3-methylbutanoate	Ethyl 2-{[(tert-butoxy)carbonyl]amino}-3-methylbutanoate	分子量：259.34 密度：N/A 沸点：N/A 熔点：N/A	1820686-32-5	C₁₃H₂₅NO₄
1-(4-fluorophenyl)-3-(4-morpholinobut-2-ynyl)urea	1-(4-fluorophenyl)-3-(4-morpholinobut-2-ynyl)urea	分子量：291.32 密度：N/A 沸点：N/A 熔点：N/A	1396802-45-1	C₁₅H₁₈FN₃O₂
1-(4-morpholinobut-2-ynyl)-3-(2-thienyl)urea	1-(4-morpholinobut-2-ynyl)-3-(2-thienyl)urea	分子量：279.36 密度：N/A 沸点：N/A 熔点：N/A	1396684-64-2	C₁₃H₁₇N₃O₂S
4-Chloro-2-fluorophenylthiocyanate	4-Chloro-2-fluorophenylthiocyanate	分子量：187.62 密度：N/A 沸点：N/A 熔点：N/A	1820666-86-1	C₇H₃ClFNS
N-(4-(methylcarbamoyl)phenyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide	N-(4-(methylcarbamoyl)phenyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide	分子量：380.2 密度：N/A 沸点：N/A 熔点：N/A	1415695-08-7	C₂₁H₂₅BN₂O₄
2-methoxy-N,2-dimethylpropanimidamide	2-methoxy-N,2-dimethylpropanimidamide	分子量：130.19 密度：N/A 沸点：N/A 熔点：N/A	1531150-39-6	C₆H₁₄N₂O
4,4-Dimethyl-3-phenylpiperidine	4,4-Dimethyl-3-phenylpiperidine	分子量：189.30 密度：N/A 沸点：N/A 熔点：N/A	811782-35-1	C₁₃H₁₉N
6-Chloro-5-(4-(1-(hydroxymethyl)cyclobutyl)phenyl)-1h-indole-3-carboxylic acid	6-Chloro-5-(4-(1-(hydroxymethyl)cyclobutyl)phenyl)-1h-indole-3-carboxylic acid	分子量：355.8 密度：N/A 沸点：N/A 熔点：N/A	1467058-70-3	C₂₀H₁₈ClNO₃
6-chloro-5-[4-(oxetan-3-ylmethoxy)phenyl]-1H-indole-3-carboxylic acid	6-chloro-5-[4-(oxetan-3-ylmethoxy)phenyl]-1H-indole-3-carboxylic acid	分子量：357.8 密度：N/A 沸点：N/A 熔点：N/A	1467058-87-2	C₁₉H₁₆ClNO₄
2-(3-((Tributylstannyl)methoxy)propyl)isoindoline-1,3-dione	2-(3-((Tributylstannyl)methoxy)propyl)isoindoline-1,3-dione	分子量：508.3 密度：N/A 沸点：N/A 熔点：N/A	1079333-56-4	C₂₄H₃₉NO₃Sn
(E)-4-Chloro-N-(4-hydroxybenzyl)-N-isobutylpent-2-enamide	(E)-4-Chloro-N-(4-hydroxybenzyl)-N-isobutylpent-2-enamide	分子量：295.80 密度：N/A 沸点：N/A 熔点：N/A	222844-76-0	C₁₆H₂₂ClNO₂
Glycine, N-benzoyl-, 1-carboxy-2-phenylethyl ester, ion(1-)	Glycine, N-benzoyl-, 1-carboxy-2-phenylethyl ester, ion(1-)	分子量：326.3 密度：N/A 沸点：N/A 熔点：N/A	5296-95-7	C₁₈H₁₆NO₅-
2-(2-Chloropyridin-4-yl)ethanamine hydrochloride	2-(2-Chloropyridin-4-yl)ethanamine hydrochloride	分子量：193.07 密度：N/A 沸点：N/A 熔点：N/A	1956356-06-1	C₇H₁₀Cl₂N₂
4-(4-Cyanopyridin-2-yl)piperazine-2-carboxylic acid	4-(4-Cyanopyridin-2-yl)piperazine-2-carboxylic acid	分子量：232.24 密度：N/A 沸点：N/A 熔点：N/A	1420796-47-9	C₁₁H₁₂N₄O₂
4-(3-Cyanopyridin-2-yl)piperazine-2-carboxylic acid	4-(3-Cyanopyridin-2-yl)piperazine-2-carboxylic acid	分子量：232.24 密度：N/A 沸点：N/A 熔点：N/A	1420795-95-4	C₁₁H₁₂N₄O₂
1-Cyano-N-(3-methoxybenzyl)cyclobutane-1-carboxamide	1-Cyano-N-(3-methoxybenzyl)cyclobutane-1-carboxamide	分子量：244.29 密度：N/A 沸点：N/A 熔点：N/A	1376332-19-2	C₁₄H₁₆N₂O₂
Fluorine F 18 fluorthanatrace	Fluorine F 18 fluorthanatrace	分子量：324.3 密度：N/A 沸点：N/A 熔点：N/A	1567375-87-4	C₁₈H₁₆FN₃O₂
4-[(Methylamino)methyl]oxan-4-ol hydrochloride	4-[(Methylamino)methyl]oxan-4-ol hydrochloride	分子量：181.66 密度：N/A 沸点：N/A 熔点：N/A	1797336-47-0	C₇H₁₆ClNO₂
2-Methyl-4-(2-oxo-1-pyrrolidinyl)phenylboronic Acid Pinacol Ester	2-Methyl-4-(2-oxo-1-pyrrolidinyl)phenylboronic Acid Pinacol Ester	分子量：301.2 密度：N/A 沸点：N/A 熔点：N/A	1351501-29-5	C₁₇H₂₄BNO₃
Tert-butyl 2-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate	Tert-butyl 2-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate	分子量：336.2 密度：N/A 沸点：N/A 熔点：N/A	1351501-49-9	C₁₈H₂₆BFO₄
6-ethynyl-N-methylpyridin-2-amine	6-ethynyl-N-methylpyridin-2-amine	分子量：132.16 密度：N/A 沸点：N/A 熔点：N/A	1373337-75-7	C₈H₈N₂
N-Methyl-1-(5-methyl-6-(piperidin-1-yl)pyridin-3-yl)methanamine	N-Methyl-1-(5-methyl-6-(piperidin-1-yl)pyridin-3-yl)methanamine	分子量：219.33 密度：N/A 沸点：N/A 熔点：N/A	1355225-07-8	C₁₃H₂₁N₃
6-(5-Methyl-1,2,4-triazol-1-yl)pyridine-3-carboxylic acid	6-(5-Methyl-1,2,4-triazol-1-yl)pyridine-3-carboxylic acid	分子量：204.19 密度：N/A 沸点：N/A 熔点：N/A	1415836-79-1	C₉H₈N₄O₂
Benzoic acid, 2-[[1-(6-bromo-2-oxo-2H-1-benzopyran-4-yl)-1H-1,2,3-triazol-4-yl]methoxy]-, methyl ester	Benzoic acid, 2-[[1-(6-bromo-2-oxo-2H-1-benzopyran-4-yl)-1H-1,2,3-triazol-4-yl]methoxy]-, methyl ester	分子量：456.2 密度：N/A 沸点：N/A 熔点：N/A	1404189-16-7	C₂₀H₁₄BrN₃O₅
(3-(pyridin-4-yl)-1H-pyrazol-4-yl)methanamine	(3-(pyridin-4-yl)-1H-pyrazol-4-yl)methanamine	分子量：174.20 密度：N/A 沸点：N/A 熔点：N/A	1519773-72-8	C₉H₁₀N₄
N-{2-[(2-cyanoethyl)sulfanyl]phenyl}-1-(2-phenylethenesulfonyl)piperidine-4-carboxamide	N-{2-[(2-cyanoethyl)sulfanyl]phenyl}-1-(2-phenylethenesulfonyl)piperidine-4-carboxamide	分子量：455.6 密度：N/A 沸点：N/A 熔点：N/A	1798404-87-1	C₂₃H₂₅N₃O₃S₂
2,4-Dichloro-N-(2-pyrimidinylmethyl)-5-pyrimidinecarboxamide	2,4-Dichloro-N-(2-pyrimidinylmethyl)-5-pyrimidinecarboxamide	分子量：284.10 密度：N/A 沸点：N/A 熔点：N/A	1534330-72-7	C₁₀H₇Cl₂N₅O
Avanafil impurity 26	Avanafil impurity 26	分子量：430.9 密度：N/A 沸点：N/A 熔点：N/A	1364671-62-4	C₁₉H₁₉ClN₆O₂S
N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}-2-methyl-1-oxo-1,2-dihydro-4-isoquinolinecarboxamide	N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}-2-methyl-1-oxo-1,2-dihydro-4-isoquinolinecarboxamide	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	1351697-72-7	C₂₄H₂₆N₂O₄
1-(4-Iodophenyl)piperidine-2,3-dione	1-(4-Iodophenyl)piperidine-2,3-dione	分子量：315.11 密度：N/A 沸点：N/A 熔点：N/A	1415831-82-1	C₁₁H₁₀INO₂
methyl 5-{[4-(6-methoxy-2-oxo-2H-chromen-3-yl)phenoxy]methyl}-2-furoate	methyl 5-{[4-(6-methoxy-2-oxo-2H-chromen-3-yl)phenoxy]methyl}-2-furoate	分子量：406.4 密度：N/A 沸点：N/A 熔点：N/A	1351690-54-4	C₂₃H₁₈O₇
2-(5-bromo-1H-indol-1-yl)-N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}acetamide	2-(5-bromo-1H-indol-1-yl)-N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}acetamide	分子量：457.4 密度：N/A 沸点：N/A 熔点：N/A	1351701-31-9	C₂₃H₂₅BrN₂O₃
1'-oxo-2'-phenyl-N-(tetrahydrofuran-2-ylmethyl)-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	1'-oxo-2'-phenyl-N-(tetrahydrofuran-2-ylmethyl)-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1351671-63-0	C₂₆H₃₀N₂O₃
2-(7,8-dimethoxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-[2-(4-methyl-1H-indol-1-yl)ethyl]acetamide	2-(7,8-dimethoxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-[2-(4-methyl-1H-indol-1-yl)ethyl]acetamide	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	1351690-67-9	C₂₅H₂₆N₂O₅
2-(6-bromo-1H-indol-1-yl)-N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}acetamide	2-(6-bromo-1H-indol-1-yl)-N-{[4-(4-methoxyphenyl)tetrahydro-2H-pyran-4-yl]methyl}acetamide	分子量：457.4 密度：N/A 沸点：N/A 熔点：N/A	1351698-23-1	C₂₃H₂₅BrN₂O₃
3-[(1,4-Diazepan-1-yl)methyl]benzonitrile dihydrochloride	3-[(1,4-Diazepan-1-yl)methyl]benzonitrile dihydrochloride	分子量：288.21 密度：N/A 沸点：N/A 熔点：N/A	199672-34-9	C₁₃H₁₉Cl₂N₃
(1-Methoxycyclobutyl)methanamine hydrochloride	(1-Methoxycyclobutyl)methanamine hydrochloride	分子量：151.63 密度：N/A 沸点：N/A 熔点：N/A	1443980-50-4	C₆H₁₄ClNO
2-(Oxolan-3-yl)-1-phenylethan-1-ol	2-(Oxolan-3-yl)-1-phenylethan-1-ol	分子量：192.25 密度：N/A 沸点：N/A 熔点：N/A	1443980-93-5	C₁₂H₁₆O₂
(S)-6-Fluoro-8-methylchroman-4-amine	(S)-6-Fluoro-8-methylchroman-4-amine	分子量：181.21 密度：N/A 沸点：N/A 熔点：N/A	1213361-81-9	C₁₀H₁₂FNO
3-Amino-1-phenylazetidin-2-one hydrochloride	3-Amino-1-phenylazetidin-2-one hydrochloride	分子量：198.65 密度：N/A 沸点：N/A 熔点：N/A	889214-85-1	C₉H₁₁ClN₂O
5-ethoxy-1-N-(2-fluorophenyl)benzene-1,2-diamine	5-ethoxy-1-N-(2-fluorophenyl)benzene-1,2-diamine	分子量：246.28 密度：N/A 沸点：N/A 熔点：N/A	1443979-33-6	C₁₄H₁₅FN₂O
5-Benzyl-2-ethylfuran-3-carboxylic acid	5-Benzyl-2-ethylfuran-3-carboxylic acid	分子量：230.26 密度：N/A 沸点：N/A 熔点：N/A	2138201-46-2	C₁₄H₁₄O₃
N-[2-(4-pyridyl)ethyl]-3-(2,3,5,9-tetramethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl)propanamide	N-[2-(4-pyridyl)ethyl]-3-(2,3,5,9-tetramethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl)propanamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1401594-91-9	C₂₅H₂₆N₂O₄
N-(1H-indol-4-yl)-3-(1-methyl-1H-indol-3-yl)propanamide	N-(1H-indol-4-yl)-3-(1-methyl-1H-indol-3-yl)propanamide	分子量：317.4 密度：N/A 沸点：N/A 熔点：N/A	1401582-43-1	C₂₀H₁₉N₃O
3-(5-Bromo-2-methoxyphenyl)-3-methylbutan-1-amine	3-(5-Bromo-2-methoxyphenyl)-3-methylbutan-1-amine	分子量：272.18 密度：N/A 沸点：N/A 熔点：N/A	1225572-72-4	C₁₂H₁₈BrNO
(2S)-N-{4-[(3-methyl-1,2,4-oxadiazol-5-yl)methoxy]phenyl}-1-(prop-2-yn-1-yl)pyrrolidine-2-carboxamide	(2S)-N-{4-[(3-methyl-1,2,4-oxadiazol-5-yl)methoxy]phenyl}-1-(prop-2-yn-1-yl)pyrrolidine-2-carboxamide	分子量：340.4 密度：N/A 沸点：N/A 熔点：N/A	1375944-48-1	C₁₈H₂₀N₄O₃
4-(8-Azabicyclo[3.2.1]octan-3-yl)piperazin-2-one	4-(8-Azabicyclo[3.2.1]octan-3-yl)piperazin-2-one	分子量：209.29 密度：N/A 沸点：N/A 熔点：N/A	1706429-29-9	C₁₁H₁₉N₃O
Benzenesulfonic acid--4-[(2R)-4-ethylmorpholin-2-yl]phenol (1/1)	Benzenesulfonic acid--4-[(2R)-4-ethylmorpholin-2-yl]phenol (1/1)	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	920803-56-1	C₁₈H₂₃NO₅S
(2S)-2-Amino-N-[1-(propan-2-yl)-1H-pyrazol-5-yl]butanamide	(2S)-2-Amino-N-[1-(propan-2-yl)-1H-pyrazol-5-yl]butanamide	分子量：210.28 密度：N/A 沸点：N/A 熔点：N/A	1568021-99-7	C₁₀H₁₈N₄O
(3,4-dihydroquinolin-1(2H)-yl)(1-(6-methoxybenzo[d]thiazol-2-yl)azetidin-3-yl)methanone	(3,4-dihydroquinolin-1(2H)-yl)(1-(6-methoxybenzo[d]thiazol-2-yl)azetidin-3-yl)methanone	分子量：379.5 密度：N/A 沸点：N/A 熔点：N/A	1396855-40-5	C₂₁H₂₁N₃O₂S