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-Aminooxy-4-methylpentanoic acid;hydrochloride	2-Aminooxy-4-methylpentanoic acid;hydrochloride	分子量：183.63 密度：N/A 沸点：N/A 熔点：N/A	54716-34-6	C₆H₁₄ClNO₃
1,1a(2):4a(2),1a(2)a(2):4a(2)a(2),1a(2)a(2)a(2):4a(2)a(2)a(2),1a(2)a(2)a(2)a(2):3a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2)a(2)a(2)-Noviphenyl	1,1a(2):4a(2),1a(2)a(2):4a(2)a(2),1a(2)a(2)a(2):4a(2)a(2)a(2),1a(2)a(2)a(2)a(2):3a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2)a(2):4a(2)a(2)a(2)a(2)a(2)a(2)a(2),1a(2)a(2)a(2)a(2)a(2)a(2)a(2)a(2)-Noviphenyl	分子量：686.9 密度：N/A 沸点：N/A 熔点：N/A	548443-09-0	C₅₄H₃₈
1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-(4-(2-oxopyrrolidin-1-yl)benzyl)-1H-1,2,3-triazole-4-carboxamide	1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-(4-(2-oxopyrrolidin-1-yl)benzyl)-1H-1,2,3-triazole-4-carboxamide	分子量：423.4 密度：N/A 沸点：N/A 熔点：N/A	2034534-10-4	C₂₂H₂₂FN₅O₃
Ethyl 3-(2-chloro-pyridin-4-yl)-benzoate	Ethyl 3-(2-chloro-pyridin-4-yl)-benzoate	分子量：261.70 密度：N/A 沸点：N/A 熔点：N/A	884656-90-0	C₁₄H₁₂ClNO₂
3-(Tert-butoxycarbonylamino)prop-1-enylboronic acid	3-(Tert-butoxycarbonylamino)prop-1-enylboronic acid	分子量：201.03 密度：N/A 沸点：N/A 熔点：N/A	2822650-20-2	C₈H₁₆BNO₄
3-Bromo-2,2-dimethylpropan-1-amine hydrobromide	3-Bromo-2,2-dimethylpropan-1-amine hydrobromide	分子量：246.97 密度：N/A 沸点：N/A 熔点：N/A	1350885-39-0	C₅H₁₃Br₂N
2,2,2-Trichloroethyl (3-oxo-1,3-dihydroisobenzofuran-5-yl)carbamate	2,2,2-Trichloroethyl (3-oxo-1,3-dihydroisobenzofuran-5-yl)carbamate	分子量：324.5 密度：N/A 沸点：N/A 熔点：N/A	1449785-10-7	C₁₁H₈Cl₃NO₄
N-(2-(cyclohex-1-en-1-yl)ethyl)-1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamide	N-(2-(cyclohex-1-en-1-yl)ethyl)-1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamide	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	2034392-82-8	C₁₉H₂₃FN₄O₂
2,4-Dibromo-5-(difluoromethoxy)pyridine	2,4-Dibromo-5-(difluoromethoxy)pyridine	分子量：302.90 密度：N/A 沸点：N/A 熔点：N/A	1805467-16-6	C₆H₃Br₂F₂NO
2-(Aminomethyl)-6-fluoroaniline hydrochloride	2-(Aminomethyl)-6-fluoroaniline hydrochloride	分子量：176.62 密度：N/A 沸点：N/A 熔点：N/A	1315180-01-8	C₇H₁₀ClFN₂
N-(4-chloro-3-(trifluoromethyl)phenyl)-1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamide	N-(4-chloro-3-(trifluoromethyl)phenyl)-1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamide	分子量：428.8 密度：N/A 沸点：N/A 熔点：N/A	2034597-95-8	C₁₈H₁₃ClF₄N₄O₂
ethyl 4-(1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamido)piperidine-1-carboxylate	ethyl 4-(1-(2-(2-fluorophenyl)-2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamido)piperidine-1-carboxylate	分子量：405.4 密度：N/A 沸点：N/A 熔点：N/A	2034354-21-5	C₁₉H₂₄FN₅O₄
tert-Butyl (1S,2S)-1-amino-2-ethylcyclopropane-1-carboxylate	tert-Butyl (1S,2S)-1-amino-2-ethylcyclopropane-1-carboxylate	分子量：185.26 密度：N/A 沸点：N/A 熔点：N/A	2165496-60-4	C₁₀H₁₉NO₂
1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-((5-methylfuran-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide	1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-((5-methylfuran-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide	分子量：344.34 密度：N/A 沸点：N/A 熔点：N/A	2034598-07-5	C₁₇H₁₇FN₄O₃
1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-(4-sulfamoylphenyl)-1H-1,2,3-triazole-4-carboxamide	1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-(4-sulfamoylphenyl)-1H-1,2,3-triazole-4-carboxamide	分子量：405.4 密度：N/A 沸点：N/A 熔点：N/A	2034477-72-8	C₁₇H₁₆FN₅O₄S
2,7-Dibromo-3,6-bis(dodecyloxy)naphthalene	2,7-Dibromo-3,6-bis(dodecyloxy)naphthalene	分子量：654.6 密度：N/A 沸点：N/A 熔点：N/A	198146-03-1	C₃₄H₅₄Br₂O₂
5,6-Dihydro-5,6-dihydroxynaphthol	5,6-Dihydro-5,6-dihydroxynaphthol	分子量：178.18 密度：N/A 沸点：N/A 熔点：N/A	5536-39-0	C₁₀H₁₀O₃
5,7-Dichloro-4-(ethoxyhydroxyphosphinyl)-2-quinolinecarboxylic acid	5,7-Dichloro-4-(ethoxyhydroxyphosphinyl)-2-quinolinecarboxylic acid	分子量：350.09 密度：N/A 沸点：N/A 熔点：N/A	198696-86-5	C₁₂H₁₀Cl₂NO₅P
2-(4-Hydroxyphenyl)-N,N,N-trimethylethan-1-aminium bromide	2-(4-Hydroxyphenyl)-N,N,N-trimethylethan-1-aminium bromide	分子量：260.17 密度：N/A 沸点：N/A 熔点：N/A	198821-67-9	C₁₁H₁₈BrNO
N-4-Morpholinyl-Na(2)-octadecylurea	N-4-Morpholinyl-Na(2)-octadecylurea	分子量：397.6 密度：N/A 沸点：N/A 熔点：N/A	198835-08-4	C₂₃H₄₇N₃O₂
Isoquinoline-3-carboxylic acid hydroxymethylamide	Isoquinoline-3-carboxylic acid hydroxymethylamide	分子量：202.21 密度：N/A 沸点：N/A 熔点：N/A	1431468-49-3	C₁₁H₁₀N₂O₂
1-(2-Methoxyethyl)-1,7-diazaspiro[4.5]decane	1-(2-Methoxyethyl)-1,7-diazaspiro[4.5]decane	分子量：198.31 密度：N/A 沸点：N/A 熔点：N/A	1422060-88-5	C₁₁H₂₂N₂O
2-Bromo-4-(2-fluoropropan-2-yl)-1,3-thiazole	2-Bromo-4-(2-fluoropropan-2-yl)-1,3-thiazole	分子量：224.10 密度：N/A 沸点：N/A 熔点：N/A	1785393-55-6	C₆H₇BrFNS
1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-((1-methyl-1H-benzo[d]imidazol-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide	1-(2-(2-fluorophenyl)-2-hydroxyethyl)-N-((1-methyl-1H-benzo[d]imidazol-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	2034477-79-5	C₂₀H₁₉FN₆O₂
2-(3,4-dimethylphenoxy)-N-(2-(4-methyl-6-oxopyrimidin-1(6H)-yl)ethyl)acetamide	2-(3,4-dimethylphenoxy)-N-(2-(4-methyl-6-oxopyrimidin-1(6H)-yl)ethyl)acetamide	分子量：315.37 密度：N/A 沸点：N/A 熔点：N/A	2034345-94-1	C₁₇H₂₁N₃O₃
5-Amino-3-bromo-1-(2-ethylbutyl)-1,2-dihydropyridin-2-one	5-Amino-3-bromo-1-(2-ethylbutyl)-1,2-dihydropyridin-2-one	分子量：273.17 密度：N/A 沸点：N/A 熔点：N/A	1557576-40-5	C₁₁H₁₇BrN₂O
2-(4,5-dimethyl-6-oxopyrimidin-1(6H)-yl)-N-((2-(2-fluorophenyl)-4-methylthiazol-5-yl)methyl)acetamide	2-(4,5-dimethyl-6-oxopyrimidin-1(6H)-yl)-N-((2-(2-fluorophenyl)-4-methylthiazol-5-yl)methyl)acetamide	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	2034358-55-7	C₁₉H₁₉FN₄O₂S
N-((2-(2-chlorophenyl)-4-methylthiazol-5-yl)methyl)thiophene-2-sulfonamide	N-((2-(2-chlorophenyl)-4-methylthiazol-5-yl)methyl)thiophene-2-sulfonamide	分子量：384.9 密度：N/A 沸点：N/A 熔点：N/A	2034601-49-3	C₁₅H₁₃ClN₂O₂S₃
2-(cyclopentylthio)-N-((6-(4-fluorophenyl)-3-methylimidazo[2,1-b]thiazol-2-yl)methyl)acetamide	2-(cyclopentylthio)-N-((6-(4-fluorophenyl)-3-methylimidazo[2,1-b]thiazol-2-yl)methyl)acetamide	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	1706366-69-9	C₂₀H₂₂FN₃OS₂
rac-(1R,2S)-2-cyclohexylcyclopropan-1-amine hydrochloride	rac-(1R,2S)-2-cyclohexylcyclopropan-1-amine hydrochloride	分子量：175.70 密度：N/A 沸点：N/A 熔点：N/A	1158807-72-7	C₉H₁₈ClN
N-((1-(thiophen-3-yl)cyclopentyl)methyl)-2-(m-tolyl)acetamide	N-((1-(thiophen-3-yl)cyclopentyl)methyl)-2-(m-tolyl)acetamide	分子量：313.5 密度：N/A 沸点：N/A 熔点：N/A	2034517-35-4	C₁₉H₂₃NOS
(2R,3S,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(2-isobutyramido-6-thioxo-3,6-dihydro-9H-purin-9-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite	(2R,3S,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(2-isobutyramido-6-thioxo-3,6-dihydro-9H-purin-9-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite	分子量：856.0 密度：N/A 沸点：N/A 熔点：N/A	125698-85-3	C₄₄H₅₄N₇O₇PS
{1-[2-(Morpholin-4-yl)ethyl]cyclobutyl}methanamine	{1-[2-(Morpholin-4-yl)ethyl]cyclobutyl}methanamine	分子量：198.31 密度：N/A 沸点：N/A 熔点：N/A	1534643-27-0	C₁₁H₂₂N₂O
2-(3-Nitrophenoxy)ethane-1-thiol	2-(3-Nitrophenoxy)ethane-1-thiol	分子量：199.23 密度：N/A 沸点：N/A 熔点：N/A	1521448-00-9	C₈H₉NO₃S
4-Chloro-2,3-dimethoxypyridine	4-Chloro-2,3-dimethoxypyridine	分子量：173.60 密度：N/A 沸点：N/A 熔点：N/A	1261629-46-2	C₇H₈ClNO₂
4-methyl-2-nitroaniline;3-oxo-N-phenylbutanamide	4-methyl-2-nitroaniline;3-oxo-N-phenylbutanamide	分子量：329.35 密度：N/A 沸点：N/A 熔点：N/A	73507-43-4	C₁₇H₁₉N₃O₄
N-(2-hydroxy-2-(thiophen-2-yl)propyl)-4-oxo-2,4,5,6-tetrahydro-1H-pyrrolo[3,2,1-ij]quinoline-8-sulfonamide	N-(2-hydroxy-2-(thiophen-2-yl)propyl)-4-oxo-2,4,5,6-tetrahydro-1H-pyrrolo[3,2,1-ij]quinoline-8-sulfonamide	分子量：392.5 密度：N/A 沸点：N/A 熔点：N/A	1788770-18-2	C₁₈H₂₀N₂O₄S₂
Oleaminopropionic acid	Oleaminopropionic acid	分子量：339.6 密度：N/A 沸点：N/A 熔点：N/A	10488-59-2	C₂₁H₄₁NO₂
Trap	Trap	分子量：579.4 密度：N/A 沸点：N/A 熔点：N/A	1242003-07-1	C₁₈H₃₆N₃O₁₂P₃
2-Hydroxy-6-isopropylquinoline-4-carboxylic acid	2-Hydroxy-6-isopropylquinoline-4-carboxylic acid	分子量：231.25 密度：N/A 沸点：N/A 熔点：N/A	1267063-16-0	C₁₃H₁₃NO₃
8-Bromo-6-chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid	8-Bromo-6-chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid	分子量：302.51 密度：N/A 沸点：N/A 熔点：N/A	1330118-80-3	C₁₀H₅BrClNO₃
Boronic acid, [3a(2)-(methoxymethyl)[1,1a(2)-biphenyl]-3-yl]-	Boronic acid, [3a(2)-(methoxymethyl)[1,1a(2)-biphenyl]-3-yl]-	分子量：242.08 密度：N/A 沸点：N/A 熔点：N/A	142273-82-3	C₁₄H₁₅BO₃
2-Cyanoethyl((R)-2,5,7,8-tetramethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl) diisopropylphosphoramidite	2-Cyanoethyl((R)-2,5,7,8-tetramethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl) diisopropylphosphoramidite	分子量：629.9 密度：N/A 沸点：N/A 熔点：N/A	1772522-16-3	C₃₈H₆₆N₂O₃P-
1-(1,3-Thiazol-2-yl)cyclopropane-1-carbonitrile	1-(1,3-Thiazol-2-yl)cyclopropane-1-carbonitrile	分子量：150.20 密度：N/A 沸点：N/A 熔点：N/A	1266989-23-4	C₇H₆N₂S
21H-Biline-1,19-dione, 22,24-dihydro-	21H-Biline-1,19-dione, 22,24-dihydro-	分子量：330.3 密度：N/A 沸点：N/A 熔点：N/A	58828-89-0	C₁₉H₁₄N₄O₂
4,4'-Diundecyl-2,2'-bipyridine	4,4'-Diundecyl-2,2'-bipyridine	分子量：464.8 密度：N/A 沸点：N/A 熔点：N/A	142646-59-1	C₃₂H₅₂N₂
3-methoxy-N-((1-(thiophen-3-yl)cyclopentyl)methyl)benzamide	3-methoxy-N-((1-(thiophen-3-yl)cyclopentyl)methyl)benzamide	分子量：315.4 密度：N/A 沸点：N/A 熔点：N/A	2034574-74-6	C₁₈H₂₁NO₂S
Methyl ((1-(thiophen-3-yl)cyclopentyl)methyl)carbamate	Methyl ((1-(thiophen-3-yl)cyclopentyl)methyl)carbamate	分子量：239.34 密度：N/A 沸点：N/A 熔点：N/A	2034599-47-6	C₁₂H₁₇NO₂S
N-((1-(thiophen-3-yl)cyclopentyl)methyl)cyclobutanecarboxamide	N-((1-(thiophen-3-yl)cyclopentyl)methyl)cyclobutanecarboxamide	分子量：263.4 密度：N/A 沸点：N/A 熔点：N/A	2034517-24-1	C₁₅H₂₁NOS
6-Cyano-3-bromo-1H-pyrazolo[4,3-b]pyridine	6-Cyano-3-bromo-1H-pyrazolo[4,3-b]pyridine	分子量：223.03 密度：N/A 沸点：N/A 熔点：N/A	1352397-49-9	C₇H₃BrN₄