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-((2-Azaspiro[3.3]heptan-6-yloxy)methyl)-5-(tert-butyl)oxazole	2-((2-Azaspiro[3.3]heptan-6-yloxy)methyl)-5-(tert-butyl)oxazole	分子量：250.34 密度：N/A 沸点：N/A 熔点：N/A	1708160-23-9	C₁₄H₂₂N₂O₂
2-(2-Azaspiro[3.3]heptan-6-yloxy)-1-morpholinoethanone	2-(2-Azaspiro[3.3]heptan-6-yloxy)-1-morpholinoethanone	分子量：240.30 密度：N/A 沸点：N/A 熔点：N/A	1707364-58-6	C₁₂H₂₀N₂O₃
1-(2,2,3,3,3-Pentafluoropropyl)pyrazole	1-(2,2,3,3,3-Pentafluoropropyl)pyrazole	分子量：200.11 密度：N/A 沸点：N/A 熔点：N/A	1707679-40-0	C₆H₅F₅N₂
rac-(1R,2R)-2-[1-(propan-2-yl)-1H-pyrazol-4-yl]cyclopropane-1-carboxylic acid	rac-(1R,2R)-2-[1-(propan-2-yl)-1H-pyrazol-4-yl]cyclopropane-1-carboxylic acid	分子量：194.23 密度：N/A 沸点：N/A 熔点：N/A	2227645-99-8	C₁₀H₁₄N₂O₂
N-(Cyanomethyl)-3,5-dimethyl-N,1-dipropylpyrazole-4-carboxamide	N-(Cyanomethyl)-3,5-dimethyl-N,1-dipropylpyrazole-4-carboxamide	分子量：262.35 密度：N/A 沸点：N/A 熔点：N/A	1645507-99-8	C₁₄H₂₂N₄O
1-Acetyl-N-(cyanomethyl)-N-propylpiperidine-2-carboxamide	1-Acetyl-N-(cyanomethyl)-N-propylpiperidine-2-carboxamide	分子量：251.32 密度：N/A 沸点：N/A 熔点：N/A	1645312-69-1	C₁₃H₂₁N₃O₂
ethyl 2-[(2S)-3-ethyl-4-hydroxy-5-oxo-2H-furan-2-yl]acetate	ethyl 2-[(2S)-3-ethyl-4-hydroxy-5-oxo-2H-furan-2-yl]acetate	分子量：214.21 密度：N/A 沸点：N/A 熔点：N/A	457604-25-0	C₁₀H₁₄O₅
4-Isopropyl-2-(pyrimidin-2-yl)-4,5-dihydrooxazole	4-Isopropyl-2-(pyrimidin-2-yl)-4,5-dihydrooxazole	分子量：191.23 密度：N/A 沸点：N/A 熔点：N/A	1616781-84-0	C₁₀H₁₃N₃O
(4aR,7aR)-4-methyl-octahydropyrrolo[3,4-b]morpholine	(4aR,7aR)-4-methyl-octahydropyrrolo[3,4-b]morpholine	分子量：142.20 密度：N/A 沸点：N/A 熔点：N/A	1932794-80-3	C₇H₁₄N₂O
(2R)-2-(2-chlorophenyl)-2-acetamidoacetic acid	(2R)-2-(2-chlorophenyl)-2-acetamidoacetic acid	分子量：227.64 密度：N/A 沸点：N/A 熔点：N/A	1689860-86-3	C₁₀H₁₀ClNO₃
2-[3-[3-(3-Bromophenyl)phenyl]phenyl]-4,6-diphenyl-1,3,5-triazine	2-[3-[3-(3-Bromophenyl)phenyl]phenyl]-4,6-diphenyl-1,3,5-triazine	分子量：540.4 密度：N/A 沸点：N/A 熔点：N/A	1616486-16-8	C₃₃H₂₂BrN₃
3-(3-((4-Hydroxypiperidin-1-yl)sulfonyl)-4-methoxyphenyl)propanoic acid	3-(3-((4-Hydroxypiperidin-1-yl)sulfonyl)-4-methoxyphenyl)propanoic acid	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1708301-13-6	C₁₅H₂₁NO₆S
(5-Amino-7-methoxy-[1,2,4]triazolo[1,5-c]quinazolin-2-yl)methanol	(5-Amino-7-methoxy-[1,2,4]triazolo[1,5-c]quinazolin-2-yl)methanol	分子量：245.24 密度：N/A 沸点：N/A 熔点：N/A	1616599-19-9	C₁₁H₁₁N₅O₂
3-Phenethyl-1H-1,2,4-triazole-5-carboxylic acid	3-Phenethyl-1H-1,2,4-triazole-5-carboxylic acid	分子量：217.22 密度：N/A 沸点：N/A 熔点：N/A	1622854-89-0	C₁₁H₁₁N₃O₂
3-(2-Thienylmethyl)-1H-1,2,4-triazole-5-carboxylic acid	3-(2-Thienylmethyl)-1H-1,2,4-triazole-5-carboxylic acid	分子量：209.23 密度：N/A 沸点：N/A 熔点：N/A	1622854-87-8	C₈H₇N₃O₂S
(2S)-2-(2,3-dihydro-1,4-benzodioxin-6-yl)propan-1-ol	(2S)-2-(2,3-dihydro-1,4-benzodioxin-6-yl)propan-1-ol	分子量：194.23 密度：N/A 沸点：N/A 熔点：N/A	2230789-55-4	C₁₁H₁₄O₃
3-Ethylsulfonylpicolinic acid	3-Ethylsulfonylpicolinic acid	分子量：215.23 密度：N/A 沸点：N/A 熔点：N/A	1421953-17-4	C₈H₉NO₄S
3-((4-Methylpiperazin-1-yl)methyl)-5-(trifluoromethyl)benzoic acid	3-((4-Methylpiperazin-1-yl)methyl)-5-(trifluoromethyl)benzoic acid	分子量：302.29 密度：N/A 沸点：N/A 熔点：N/A	1616670-62-2	C₁₄H₁₇F₃N₂O₂
(3R,4R)-N,4-Dimethyl-1-(triphenylmethyl)-3-piperidinamine	(3R,4R)-N,4-Dimethyl-1-(triphenylmethyl)-3-piperidinamine	分子量：370.5 密度：N/A 沸点：N/A 熔点：N/A	1616760-93-0	C₂₆H₃₀N₂
2-cyano-3-(3-methoxy-4-{[(4-methylphenyl)carbamoyl]methoxy}phenyl)-N-methylprop-2-enamide	2-cyano-3-(3-methoxy-4-{[(4-methylphenyl)carbamoyl]methoxy}phenyl)-N-methylprop-2-enamide	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	733800-59-4	C₂₁H₂₁N₃O₄
2,2',3,3',5-Pentabromobiphenyl	2,2',3,3',5-Pentabromobiphenyl	分子量：548.7 密度：N/A 沸点：N/A 熔点：N/A	2181002-64-0	C₁₂H₅Br₅
2-((1,3-Dimethyl-4-(methylsulfonyl)-1H-pyrazol-5-yl)oxy)acetic acid	2-((1,3-Dimethyl-4-(methylsulfonyl)-1H-pyrazol-5-yl)oxy)acetic acid	分子量：248.26 密度：N/A 沸点：N/A 熔点：N/A	1707391-46-5	C₈H₁₂N₂O₅S
6-Chloro-8-isopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile	6-Chloro-8-isopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile	分子量：236.70 密度：N/A 沸点：N/A 熔点：N/A	1707365-06-7	C₁₂H₁₃ClN₂O
2-Amino-4-((trifluoromethyl)sulfinyl)phenol	2-Amino-4-((trifluoromethyl)sulfinyl)phenol	分子量：225.19 密度：N/A 沸点：N/A 熔点：N/A	1616682-59-7	C₇H₆F₃NO₂S
N-(3,4-difluorophenyl)-2-fluoro-5-iodobenzamide	N-(3,4-difluorophenyl)-2-fluoro-5-iodobenzamide	分子量：377.10 密度：N/A 沸点：N/A 熔点：N/A	1616809-53-0	C₁₃H₇F₃INO
Ethyl 5-methyl-1-(2-methylbenzyl)-1H-pyrazole-3-carboxylate	Ethyl 5-methyl-1-(2-methylbenzyl)-1H-pyrazole-3-carboxylate	分子量：258.32 密度：N/A 沸点：N/A 熔点：N/A	1622855-11-1	C₁₅H₁₈N₂O₂
6-Chloro-8-cyclopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile	6-Chloro-8-cyclopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile	分子量：234.68 密度：N/A 沸点：N/A 熔点：N/A	1707679-57-9	C₁₂H₁₁ClN₂O
ethyl 1-(2-fluorobenzyl)-5-methyl-1H-pyrazole-3-carboxylate	ethyl 1-(2-fluorobenzyl)-5-methyl-1H-pyrazole-3-carboxylate	分子量：262.28 密度：N/A 沸点：N/A 熔点：N/A	1622855-16-6	C₁₄H₁₅FN₂O₂
Ethyl 5-methyl-1-((6-methylpyridin-3-yl)methyl)-1H-pyrazole-3-carboxylate	Ethyl 5-methyl-1-((6-methylpyridin-3-yl)methyl)-1H-pyrazole-3-carboxylate	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	1622855-13-3	C₁₄H₁₇N₃O₂
tert-Butyl 7-chloro-5-oxo-4,5-dihydro-1H-benzo[c]azepine-2(3H)-carboxylate	tert-Butyl 7-chloro-5-oxo-4,5-dihydro-1H-benzo[c]azepine-2(3H)-carboxylate	分子量：295.76 密度：N/A 沸点：N/A 熔点：N/A	1708250-61-6	C₁₅H₁₈ClNO₃
5-Bromo-N-ethyl-2-isobutoxynicotinamide	5-Bromo-N-ethyl-2-isobutoxynicotinamide	分子量：301.18 密度：N/A 沸点：N/A 熔点：N/A	1707568-43-1	C₁₂H₁₇BrN₂O₂
5,6-Dichloro-N-((tetrahydro-2H-pyran-4-yl)methyl)pyridin-3-amine	5,6-Dichloro-N-((tetrahydro-2H-pyran-4-yl)methyl)pyridin-3-amine	分子量：261.14 密度：N/A 沸点：N/A 熔点：N/A	1774899-37-4	C₁₁H₁₄Cl₂N₂O
1-(Cyclopropylmethyl)-5-iodo-4-oxo-1,4-dihydropyridine-3-carbonitrile	1-(Cyclopropylmethyl)-5-iodo-4-oxo-1,4-dihydropyridine-3-carbonitrile	分子量：300.10 密度：N/A 沸点：N/A 熔点：N/A	1707371-89-8	C₁₀H₉IN₂O
5-Iodo-1-(2-methoxyethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile	5-Iodo-1-(2-methoxyethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile	分子量：304.08 密度：N/A 沸点：N/A 熔点：N/A	1774899-93-2	C₉H₉IN₂O₂
5-Bromo-1-ethyl-4-oxo-1,4-dihydropyridine-3-carbonitrile	5-Bromo-1-ethyl-4-oxo-1,4-dihydropyridine-3-carbonitrile	分子量：227.06 密度：N/A 沸点：N/A 熔点：N/A	1710202-10-0	C₈H₇BrN₂O
5-Bromo-1-(cyclopropylmethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile	5-Bromo-1-(cyclopropylmethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile	分子量：253.09 密度：N/A 沸点：N/A 熔点：N/A	1779122-60-9	C₁₀H₉BrN₂O
4-Chloro-[3,4'-bipyridine]-5-carbonitrile	4-Chloro-[3,4'-bipyridine]-5-carbonitrile	分子量：215.64 密度：N/A 沸点：N/A 熔点：N/A	1710661-25-8	C₁₁H₆ClN₃
4-Chloro-5-(4-nitrophenyl)nicotinonitrile	4-Chloro-5-(4-nitrophenyl)nicotinonitrile	分子量：259.65 密度：N/A 沸点：N/A 熔点：N/A	1436405-49-0	C₁₂H₆ClN₃O₂
6-Ethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	6-Ethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	分子量：178.23 密度：N/A 沸点：N/A 熔点：N/A	1710345-25-7	C₁₀H₁₄N₂O
3-Bromo-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	3-Bromo-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	分子量：271.15 密度：N/A 沸点：N/A 熔点：N/A	1707371-94-5	C₁₁H₁₅BrN₂O
3-Chloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	3-Chloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one	分子量：226.70 密度：N/A 沸点：N/A 熔点：N/A	1779123-08-8	C₁₁H₁₅ClN₂O
2,3-Dichloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridine	2,3-Dichloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridine	分子量：245.14 密度：N/A 沸点：N/A 熔点：N/A	1708401-30-2	C₁₁H₁₄Cl₂N₂
5-Bromo-6-chloro-2-phenylnicotinonitrile	5-Bromo-6-chloro-2-phenylnicotinonitrile	分子量：293.54 密度：N/A 沸点：N/A 熔点：N/A	1708401-31-3	C₁₂H₆BrClN₂
6-Oxo-2-phenyl-1,6-dihydropyridine-3-carbonitrile	6-Oxo-2-phenyl-1,6-dihydropyridine-3-carbonitrile	分子量：196.20 密度：N/A 沸点：N/A 熔点：N/A	1187433-45-9	C₁₂H₈N₂O
5-Bromo-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	5-Bromo-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	分子量：309.54 密度：N/A 沸点：N/A 熔点：N/A	1707568-52-2	C₁₂H₆BrClN₂O
5-Chloro-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	5-Chloro-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	分子量：265.09 密度：N/A 沸点：N/A 熔点：N/A	1707581-48-3	C₁₂H₆Cl₂N₂O
2-(2-Chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	2-(2-Chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile	分子量：230.65 密度：N/A 沸点：N/A 熔点：N/A	1707727-68-1	C₁₂H₇ClN₂O
6-Oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile	6-Oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile	分子量：197.19 密度：N/A 沸点：N/A 熔点：N/A	1707581-50-7	C₁₁H₇N₃O
5-Chloro-6-oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile	5-Chloro-6-oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile	分子量：231.64 密度：N/A 沸点：N/A 熔点：N/A	1707371-96-7	C₁₁H₆ClN₃O
5,6-Dichloro-[2,3'-bipyridine]-3-carbonitrile	5,6-Dichloro-[2,3'-bipyridine]-3-carbonitrile	分子量：250.08 密度：N/A 沸点：N/A 熔点：N/A	1774900-99-0	C₁₁H₅Cl₂N₃