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
3-[(Propan-2-yloxy)methyl]-5-{4-[5-(trifluoromethyl)-1,2,4-oxadiazol-3-yl]phenyl}-1,2,4-oxadiazole	3-[(Propan-2-yloxy)methyl]-5-{4-[5-(trifluoromethyl)-1,2,4-oxadiazol-3-yl]phenyl}-1,2,4-oxadiazole	分子量：354.28 密度：N/A 沸点：N/A 熔点：N/A	1955520-19-0	C₁₅H₁₃F₃N₄O₃
rac-(2R,3R)-2-(1-phenyl-1H-imidazol-2-yl)oxolan-3-amine	rac-(2R,3R)-2-(1-phenyl-1H-imidazol-2-yl)oxolan-3-amine	分子量：229.28 密度：N/A 沸点：N/A 熔点：N/A	2031242-27-8	C₁₃H₁₅N₃O
(2R,3R)-2-(1-methyl-1H-pyrazol-5-yl)tetrahydrofuran-3-carbaldehyde	(2R,3R)-2-(1-methyl-1H-pyrazol-5-yl)tetrahydrofuran-3-carbaldehyde	分子量：180.20 密度：N/A 沸点：N/A 熔点：N/A	1932259-66-9	C₉H₁₂N₂O₂
(3S,4R)-3-Bromo-4-methoxythiolane 1,1-dioxide	(3S,4R)-3-Bromo-4-methoxythiolane 1,1-dioxide	分子量：229.09 密度：N/A 沸点：N/A 熔点：N/A	2109277-80-5	C₅H₉BrO₃S
2,2-Dimethylbut-3-en-1-yl methanesulfonate	2,2-Dimethylbut-3-en-1-yl methanesulfonate	分子量：178.25 密度：N/A 沸点：N/A 熔点：N/A	70074-03-2	C₇H₁₄O₃S
5-methyl-5H,6H,7H-pyrrolo[1,2-a]imidazol-7-amine	5-methyl-5H,6H,7H-pyrrolo[1,2-a]imidazol-7-amine	分子量：137.18 密度：N/A 沸点：N/A 熔点：N/A	1880457-10-2	C₇H₁₁N₃
4-Methyl-4,5,6,7-tetrahydro-1-benzothiophen-7-one	4-Methyl-4,5,6,7-tetrahydro-1-benzothiophen-7-one	分子量：166.24 密度：N/A 沸点：N/A 熔点：N/A	1864061-40-4	C₉H₁₀OS
5-(Hydroxymethyl)-5-methylpiperidin-2-one	5-(Hydroxymethyl)-5-methylpiperidin-2-one	分子量：143.18 密度：N/A 沸点：N/A 熔点：N/A	1909336-03-3	C₇H₁₃NO₂
5-(Hydroxymethyl)-5-phenylpiperidin-2-one	5-(Hydroxymethyl)-5-phenylpiperidin-2-one	分子量：205.25 密度：N/A 沸点：N/A 熔点：N/A	1909308-61-7	C₁₂H₁₅NO₂
Tert-butyl 4-cyano-4-(4-oxooxolan-3-yl)piperidine-1-carboxylate	Tert-butyl 4-cyano-4-(4-oxooxolan-3-yl)piperidine-1-carboxylate	分子量：294.35 密度：N/A 沸点：N/A 熔点：N/A	1909336-54-4	C₁₅H₂₂N₂O₄
tert-butyl N-(5,5-dimethyl-1-oxohexan-2-yl)carbamate	tert-butyl N-(5,5-dimethyl-1-oxohexan-2-yl)carbamate	分子量：243.34 密度：N/A 沸点：N/A 熔点：N/A	1909348-64-6	C₁₃H₂₅NO₃
2-Methyl-2-{1,4,7-trioxaspiro[4.4]nonan-9-yl}propanenitrile	2-Methyl-2-{1,4,7-trioxaspiro[4.4]nonan-9-yl}propanenitrile	分子量：197.23 密度：N/A 沸点：N/A 熔点：N/A	1909327-19-0	C₁₀H₁₅NO₃
2-Methyl-2-{1,4,7-trioxaspiro[4.4]nonan-9-yl}propan-1-amine	2-Methyl-2-{1,4,7-trioxaspiro[4.4]nonan-9-yl}propan-1-amine	分子量：201.26 密度：N/A 沸点：N/A 熔点：N/A	1909326-62-0	C₁₀H₁₉NO₃
4-methyl-4H-pyran-2,6-dicarboxylic acid	4-methyl-4H-pyran-2,6-dicarboxylic acid	分子量：184.15 密度：N/A 沸点：N/A 熔点：N/A	23046-94-8	C₈H₈O₅
5-(Aminomethyl)-6-methylpyridine-3-sulfonamide	5-(Aminomethyl)-6-methylpyridine-3-sulfonamide	分子量：201.25 密度：N/A 沸点：N/A 熔点：N/A	1871876-14-0	C₇H₁₁N₃O₂S
rac-methyl (2R,3R)-1-ethyl-5-oxo-2-(pyridin-3-yl)pyrrolidine-3-carboxylate, trans	rac-methyl (2R,3R)-1-ethyl-5-oxo-2-(pyridin-3-yl)pyrrolidine-3-carboxylate, trans	分子量：248.28 密度：N/A 沸点：N/A 熔点：N/A	1909286-43-6	C₁₃H₁₆N₂O₃
3-(Propan-2-yl)-2-azaspiro[3.4]octan-1-one	3-(Propan-2-yl)-2-azaspiro[3.4]octan-1-one	分子量：167.25 密度：N/A 沸点：N/A 熔点：N/A	1870091-13-6	C₁₀H₁₇NO
(1S,2S,7R)-2-Methyl-4-azatricyclo[5.2.1.0,2,6]decane-3,5-dione	(1S,2S,7R)-2-Methyl-4-azatricyclo[5.2.1.0,2,6]decane-3,5-dione	分子量：179.22 密度：N/A 沸点：N/A 熔点：N/A	1909301-29-6	C₁₀H₁₃NO₂
3-(Oxan-4-yl)-2-azaspiro[3.3]heptan-1-one	3-(Oxan-4-yl)-2-azaspiro[3.3]heptan-1-one	分子量：195.26 密度：N/A 沸点：N/A 熔点：N/A	1864319-13-0	C₁₁H₁₇NO₂
3-Phenyl-2-azaspiro[3.4]octan-1-one	3-Phenyl-2-azaspiro[3.4]octan-1-one	分子量：201.26 密度：N/A 沸点：N/A 熔点：N/A	1876227-20-1	C₁₃H₁₅NO
{1-[Amino(phenyl)methyl]cyclopentyl}methanol	{1-[Amino(phenyl)methyl]cyclopentyl}methanol	分子量：205.30 密度：N/A 沸点：N/A 熔点：N/A	1859652-90-6	C₁₃H₁₉NO
3-(Thiophen-2-yl)-2-azaspiro[3.3]heptan-1-one	3-(Thiophen-2-yl)-2-azaspiro[3.3]heptan-1-one	分子量：193.27 密度：N/A 沸点：N/A 熔点：N/A	1857256-49-5	C₁₀H₁₁NOS
tert-Butyl N-({6-azaspiro[3.4]octan-8-yl}methyl)carbamate	tert-Butyl N-({6-azaspiro[3.4]octan-8-yl}methyl)carbamate	分子量：240.34 密度：N/A 沸点：N/A 熔点：N/A	1909336-06-6	C₁₃H₂₄N₂O₂
2-amino-3,3,3-trifluoro-2-(1H-pyrrol-2-yl)propanoic acid	2-amino-3,3,3-trifluoro-2-(1H-pyrrol-2-yl)propanoic acid	分子量：208.14 密度：N/A 沸点：N/A 熔点：N/A	1909327-30-5	C₇H₇F₃N₂O₂
5-Carbamoyl-4-methylpyridine-2-carboxylic acid	5-Carbamoyl-4-methylpyridine-2-carboxylic acid	分子量：180.16 密度：N/A 沸点：N/A 熔点：N/A	1909314-03-9	C₈H₈N₂O₃
rac-(5R,6R)-5-amino-1-methyl-6-(1-methyl-1H-imidazol-5-yl)piperidin-2-one	rac-(5R,6R)-5-amino-1-methyl-6-(1-methyl-1H-imidazol-5-yl)piperidin-2-one	分子量：208.26 密度：N/A 沸点：N/A 熔点：N/A	1909286-78-7	C₁₀H₁₆N₄O
(Z)-3-(1,2,2,3-Tetramethylcyclopentyl)prop-2-enoic acid	(Z)-3-(1,2,2,3-Tetramethylcyclopentyl)prop-2-enoic acid	分子量：196.29 密度：N/A 沸点：N/A 熔点：N/A	861316-86-1	C₁₂H₂₀O₂
(2S,3R)-3-Ethoxy-2-phenylsulfanylcyclobutan-1-one	(2S,3R)-3-Ethoxy-2-phenylsulfanylcyclobutan-1-one	分子量：222.31 密度：N/A 沸点：N/A 熔点：N/A	1909287-95-1	C₁₂H₁₄O₂S
(2R,4R)-2-Pyridin-2-yloxan-4-amine	(2R,4R)-2-Pyridin-2-yloxan-4-amine	分子量：178.23 密度：N/A 沸点：N/A 熔点：N/A	2102953-07-9	C₁₀H₁₄N₂O
(4S,5S)-1-ethyl-4-(hydroxymethyl)-5-(pyridin-3-yl)pyrrolidin-2-one	(4S,5S)-1-ethyl-4-(hydroxymethyl)-5-(pyridin-3-yl)pyrrolidin-2-one	分子量：220.27 密度：N/A 沸点：N/A 熔点：N/A	1909287-81-5	C₁₂H₁₆N₂O₂
7-chloro-1,3-dimethyl-1H-pyrazolo[3,4-d]pyridazine	7-chloro-1,3-dimethyl-1H-pyrazolo[3,4-d]pyridazine	分子量：182.61 密度：N/A 沸点：N/A 熔点：N/A	1909320-06-4	C₇H₇ClN₄
3-(2-Hydroxy-4-(trifluoromethoxy)phenyl)acrylic acid	3-(2-Hydroxy-4-(trifluoromethoxy)phenyl)acrylic acid	分子量：248.15 密度：N/A 沸点：N/A 熔点：N/A	1262018-21-2	C₁₀H₇F₃O₄
3-(3,5-dimethyl-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)propanoic acid	3-(3,5-dimethyl-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrazol-4-yl)propanoic acid	分子量：298.45 密度：N/A 沸点：N/A 熔点：N/A	1909311-89-2	C₁₄H₂₆N₂O₃Si
rac-benzyl N-[(1R,3S)-3-[(chlorosulfonyl)methyl]cyclopentyl]carbamate	rac-benzyl N-[(1R,3S)-3-[(chlorosulfonyl)methyl]cyclopentyl]carbamate	分子量：331.8 密度：N/A 沸点：N/A 熔点：N/A	2307772-89-8	C₁₄H₁₈ClNO₄S
Methyl 2-fluoro-3-hydrazinylbenzoate	Methyl 2-fluoro-3-hydrazinylbenzoate	分子量：184.17 密度：N/A 沸点：N/A 熔点：N/A	1388029-04-6	C₈H₉FN₂O₂
[(4-Amino-2-bromo-5-chlorophenyl)sulfanyl]formonitrile	[(4-Amino-2-bromo-5-chlorophenyl)sulfanyl]formonitrile	分子量：263.54 密度：N/A 沸点：N/A 熔点：N/A	1909326-34-6	C₇H₄BrClN₂S
4-Amino-2-bromo-5-chlorobenzene-1-thiol	4-Amino-2-bromo-5-chlorobenzene-1-thiol	分子量：238.53 密度：N/A 沸点：N/A 熔点：N/A	1909309-30-3	C₆H₅BrClNS
2-(Aminomethyl)oxolane-3-carboxylic acid	2-(Aminomethyl)oxolane-3-carboxylic acid	分子量：145.16 密度：N/A 沸点：N/A 熔点：N/A	1909319-62-5	C₆H₁₁NO₃
rac-(5R,6R)-5-amino-1-cyclopropyl-6-(1-methyl-1H-imidazol-5-yl)piperidin-2-one	rac-(5R,6R)-5-amino-1-cyclopropyl-6-(1-methyl-1H-imidazol-5-yl)piperidin-2-one	分子量：234.30 密度：N/A 沸点：N/A 熔点：N/A	1909294-74-1	C₁₂H₁₈N₄O
Ethyl 4-cyano-2-(2-cyanoethyl)-2-cyclopropanecarbonylbutanoate	Ethyl 4-cyano-2-(2-cyanoethyl)-2-cyclopropanecarbonylbutanoate	分子量：262.30 密度：N/A 沸点：N/A 熔点：N/A	1909305-87-8	C₁₄H₁₈N₂O₃
1-tert-Butyl 2-methyl 5-oxo-3-(trifluoromethyl)pyrrolidine-1,2-dicarboxylate	1-tert-Butyl 2-methyl 5-oxo-3-(trifluoromethyl)pyrrolidine-1,2-dicarboxylate	分子量：311.25 密度：N/A 沸点：N/A 熔点：N/A	1909305-82-3	C₁₂H₁₆F₃NO₅
Methyl (2S,5S)-5-methyltetrahydrofuran-2-carboxylate	Methyl (2S,5S)-5-methyltetrahydrofuran-2-carboxylate	分子量：144.17 密度：N/A 沸点：N/A 熔点：N/A	1847423-09-9	C₇H₁₂O₃
rac-(2R,3R)-2-[1-(3-methoxypropyl)-1H-pyrazol-5-yl]oxolane-3-carboxylic acid	rac-(2R,3R)-2-[1-(3-methoxypropyl)-1H-pyrazol-5-yl]oxolane-3-carboxylic acid	分子量：254.28 密度：N/A 沸点：N/A 熔点：N/A	1909286-75-4	C₁₂H₁₈N₂O₄
3-Bromo-2-hydroxy-2-phenylpropanamide	3-Bromo-2-hydroxy-2-phenylpropanamide	分子量：244.08 密度：N/A 沸点：N/A 熔点：N/A	1909319-68-1	C₉H₁₀BrNO₂
Tert-butyl 3-(hydroxymethyl)-3-(methoxymethyl)pyrrolidine-1-carboxylate	Tert-butyl 3-(hydroxymethyl)-3-(methoxymethyl)pyrrolidine-1-carboxylate	分子量：245.32 密度：N/A 沸点：N/A 熔点：N/A	1909325-67-2	C₁₂H₂₃NO₄
4,5-Bis[(methylamino)methyl]thiophene-2-carboxylic acid	4,5-Bis[(methylamino)methyl]thiophene-2-carboxylic acid	分子量：214.29 密度：N/A 沸点：N/A 熔点：N/A	1909317-19-6	C₉H₁₄N₂O₂S
cyclopropyl(1,5-dimethyl-1H-pyrazol-3-yl)methanol	cyclopropyl(1,5-dimethyl-1H-pyrazol-3-yl)methanol	分子量：166.22 密度：N/A 沸点：N/A 熔点：N/A	1702445-11-1	C₉H₁₄N₂O
N-[(furan-2-yl)(4-methoxyphenyl)methyl]-4-methylbenzene-1-sulfonamide	N-[(furan-2-yl)(4-methoxyphenyl)methyl]-4-methylbenzene-1-sulfonamide	分子量：357.4 密度：N/A 沸点：N/A 熔点：N/A	1631738-40-3	C₁₉H₁₉NO₄S
(4R,5S)-4-amino-1-cyclopropyl-5-pyridin-3-ylpyrrolidin-2-one	(4R,5S)-4-amino-1-cyclopropyl-5-pyridin-3-ylpyrrolidin-2-one	分子量：217.27 密度：N/A 沸点：N/A 熔点：N/A	2307782-82-5	C₁₂H₁₅N₃O
2-(4-benzoylphenoxy)-N-{1-[(4-hydroxyphenyl)methyl]piperidin-4-yl}acetamide	2-(4-benzoylphenoxy)-N-{1-[(4-hydroxyphenyl)methyl]piperidin-4-yl}acetamide	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	1909324-98-6	C₂₇H₂₈N₂O₄