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-(2,2-dimethylthiolan-3-yl)-1-methyl-1H-pyrazole-5-carboxylic acid
|
3-(2,2-dimethylthiolan-3-yl)-1-methyl-1H-pyrazole-5-carboxylic acid
|
分子量：240.32
密度：N/A
沸点：N/A
熔点：N/A
|
2228713-98-0
|
C11H16N2O2S
|
| 7-Chloro-1,3-dioxaindane-5-sulfonyl chloride
|
7-Chloro-1,3-dioxaindane-5-sulfonyl chloride
|
分子量：255.07
密度：N/A
沸点：N/A
熔点：N/A
|
2229585-81-1
|
C7H4Cl2O4S
|
| 1-(1-{[(Tert-butoxy)carbonyl]amino}cyclopentyl)cyclopropane-1-carboxylic acid
|
1-(1-{[(Tert-butoxy)carbonyl]amino}cyclopentyl)cyclopropane-1-carboxylic acid
|
分子量：269.34
密度：N/A
沸点：N/A
熔点：N/A
|
2228610-06-6
|
C14H23NO4
|
| 2-{Imidazo[1,2-a]pyridin-3-yl}-2-methylpropanoic acid
|
2-{Imidazo[1,2-a]pyridin-3-yl}-2-methylpropanoic acid
|
分子量：204.22
密度：N/A
沸点：N/A
熔点：N/A
|
2229478-34-4
|
C11H12N2O2
|
| 2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]-5-fluoropyrimidine
|
2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]-5-fluoropyrimidine
|
分子量：289.31
密度：N/A
沸点：N/A
熔点：N/A
|
2741949-07-3
|
C14H16FN5O
|
| 2,2,2-Trifluoro-1-{pyrazolo[1,5-a]pyrimidin-6-yl}ethan-1-amine
|
2,2,2-Trifluoro-1-{pyrazolo[1,5-a]pyrimidin-6-yl}ethan-1-amine
|
分子量：216.16
密度：N/A
沸点：N/A
熔点：N/A
|
2228962-21-6
|
C8H7F3N4
|
| 1-(4-Bromofuran-2-yl)-2-(methylamino)ethan-1-one
|
1-(4-Bromofuran-2-yl)-2-(methylamino)ethan-1-one
|
分子量：218.05
密度：N/A
沸点：N/A
熔点：N/A
|
2228500-30-7
|
C7H8BrNO2
|
| methyl 5-[1-(aminooxy)propan-2-yl]-1-methyl-1H-pyrrole-2-carboxylate
|
methyl 5-[1-(aminooxy)propan-2-yl]-1-methyl-1H-pyrrole-2-carboxylate
|
分子量：212.25
密度：N/A
沸点：N/A
熔点：N/A
|
2228190-52-9
|
C10H16N2O3
|
| 4-[3-(Methoxymethyl)furan-2-yl]-1,3-oxazolidin-2-one
|
4-[3-(Methoxymethyl)furan-2-yl]-1,3-oxazolidin-2-one
|
分子量：197.19
密度：N/A
沸点：N/A
熔点：N/A
|
2228528-61-6
|
C9H11NO4
|
| Ethyl 4-(trifluoroacetyl)piperidine-1-carboxylate
|
Ethyl 4-(trifluoroacetyl)piperidine-1-carboxylate
|
分子量：253.22
密度：N/A
沸点：N/A
熔点：N/A
|
2229262-00-2
|
C10H14F3NO3
|
| (1R)-1-[3-(methoxymethyl)phenyl]ethan-1-ol
|
(1R)-1-[3-(methoxymethyl)phenyl]ethan-1-ol
|
分子量：166.22
密度：N/A
沸点：N/A
熔点：N/A
|
2227912-83-4
|
C10H14O2
|
| 2,2-Difluoro-3-(2,4,6-trichlorophenyl)propan-1-amine
|
2,2-Difluoro-3-(2,4,6-trichlorophenyl)propan-1-amine
|
分子量：274.5
密度：N/A
沸点：N/A
熔点：N/A
|
2229478-52-6
|
C9H8Cl3F2N
|
| 3-[2-(Dimethylamino)-5-fluorophenyl]-1,1,1-trifluoropropan-2-one
|
3-[2-(Dimethylamino)-5-fluorophenyl]-1,1,1-trifluoropropan-2-one
|
分子量：249.20
密度：N/A
沸点：N/A
熔点：N/A
|
2228311-32-6
|
C11H11F4NO
|
| 1-{2-[(azetidin-3-yl)methyl]phenyl}-1H-pyrazole
|
1-{2-[(azetidin-3-yl)methyl]phenyl}-1H-pyrazole
|
分子量：213.28
密度：N/A
沸点：N/A
熔点：N/A
|
2228962-37-4
|
C13H15N3
|
| lithio (2E)-3-{5-chloro-3-methyl-1-[3-(trifluoromethyl)phenyl]-1H-pyrazol-4-yl}-2-cyanoprop-2-enoate
|
lithio (2E)-3-{5-chloro-3-methyl-1-[3-(trifluoromethyl)phenyl]-1H-pyrazol-4-yl}-2-cyanoprop-2-enoate
|
分子量：361.7
密度：N/A
沸点：N/A
熔点：N/A
|
2649087-54-5
|
C15H8ClF3LiN3O2
|
| (2E)-3-{5-chloro-3-methyl-1-[3-(trifluoromethyl)phenyl]-1H-pyrazol-4-yl}-2-cyanoprop-2-enoic acid
|
(2E)-3-{5-chloro-3-methyl-1-[3-(trifluoromethyl)phenyl]-1H-pyrazol-4-yl}-2-cyanoprop-2-enoic acid
|
分子量：355.70
密度：N/A
沸点：N/A
熔点：N/A
|
2648972-82-9
|
C15H9ClF3N3O2
|
| 4-Chlorothiophene-3-sulfonyl fluoride
|
4-Chlorothiophene-3-sulfonyl fluoride
|
分子量：200.6
密度：N/A
沸点：N/A
熔点：N/A
|
2295232-80-1
|
C4H2ClFO2S2
|
| 3-Bromo-2,6-difluorobenzene-1-sulfonyl fluoride
|
3-Bromo-2,6-difluorobenzene-1-sulfonyl fluoride
|
分子量：275.05
密度：N/A
沸点：N/A
熔点：N/A
|
2295598-64-8
|
C6H2BrF3O2S
|
| tert-butyl N-[1-(3-chloro-2-methoxyphenyl)-2-oxoethyl]-N-methylcarbamate
|
tert-butyl N-[1-(3-chloro-2-methoxyphenyl)-2-oxoethyl]-N-methylcarbamate
|
分子量：313.77
密度：N/A
沸点：N/A
熔点：N/A
|
2228190-60-9
|
C15H20ClNO4
|
| 4-[2-(1-Aminocyclopropyl)propan-2-yl]-2-nitrophenol
|
4-[2-(1-Aminocyclopropyl)propan-2-yl]-2-nitrophenol
|
分子量：236.27
密度：N/A
沸点：N/A
熔点：N/A
|
2229240-79-1
|
C12H16N2O3
|
| 3-Chloro-2-{[hydroxy(methyl)amino]methyl}phenol
|
3-Chloro-2-{[hydroxy(methyl)amino]methyl}phenol
|
分子量：187.62
密度：N/A
沸点：N/A
熔点：N/A
|
2228528-72-9
|
C8H10ClNO2
|
| 2-amino-2-[1-(2,3-dihydro-1H-inden-2-yl)cyclopropyl]acetic acid
|
2-amino-2-[1-(2,3-dihydro-1H-inden-2-yl)cyclopropyl]acetic acid
|
分子量：231.29
密度：N/A
沸点：N/A
熔点：N/A
|
2228085-92-3
|
C14H17NO2
|
| 3-Amino-2-[2-(dimethylamino)-3,4-difluorophenyl]propanoic acid
|
3-Amino-2-[2-(dimethylamino)-3,4-difluorophenyl]propanoic acid
|
分子量：244.24
密度：N/A
沸点：N/A
熔点：N/A
|
2229049-30-1
|
C11H14F2N2O2
|
| 3-(2-Chloroquinolin-3-yl)azetidin-3-ol
|
3-(2-Chloroquinolin-3-yl)azetidin-3-ol
|
分子量：234.68
密度：N/A
沸点：N/A
熔点：N/A
|
2228611-02-5
|
C12H11ClN2O
|
| 3-(3-Methoxypyridin-2-yl)-2,2-dimethylpropanoic acid
|
3-(3-Methoxypyridin-2-yl)-2,2-dimethylpropanoic acid
|
分子量：209.24
密度：N/A
沸点：N/A
熔点：N/A
|
2229002-67-7
|
C11H15NO3
|
| 5-Amino-1,1,2,2-tetrafluoropentan-3-ol
|
5-Amino-1,1,2,2-tetrafluoropentan-3-ol
|
分子量：175.12
密度：N/A
沸点：N/A
熔点：N/A
|
2228190-87-0
|
C5H9F4NO
|
| 3-(3,4-dihydro-1H-2-benzopyran-6-yl)-1,1,1-trifluoropropan-2-one
|
3-(3,4-dihydro-1H-2-benzopyran-6-yl)-1,1,1-trifluoropropan-2-one
|
分子量：244.21
密度：N/A
沸点：N/A
熔点：N/A
|
2228683-90-5
|
C12H11F3O2
|
| 3,3-difluoro-2-(1-methyl-1H-1,3-benzodiazol-5-yl)propan-1-amine
|
3,3-difluoro-2-(1-methyl-1H-1,3-benzodiazol-5-yl)propan-1-amine
|
分子量：225.24
密度：N/A
沸点：N/A
熔点：N/A
|
2229565-02-8
|
C11H13F2N3
|
| 2-(4-Bromo-2-nitrophenyl)-2-methylpropan-1-amine
|
2-(4-Bromo-2-nitrophenyl)-2-methylpropan-1-amine
|
分子量：273.13
密度：N/A
沸点：N/A
熔点：N/A
|
2229002-73-5
|
C10H13BrN2O2
|
| 2-(2,5-Dimethoxypyridin-4-yl)-1,1-difluoropropan-2-amine
|
2-(2,5-Dimethoxypyridin-4-yl)-1,1-difluoropropan-2-amine
|
分子量：232.23
密度：N/A
沸点：N/A
熔点：N/A
|
2228528-66-1
|
C10H14F2N2O2
|
| 2-Hydroxy-2-(1-{pyrazolo[1,5-a]pyridin-3-yl}cyclopropyl)acetic acid
|
2-Hydroxy-2-(1-{pyrazolo[1,5-a]pyridin-3-yl}cyclopropyl)acetic acid
|
分子量：232.23
密度：N/A
沸点：N/A
熔点：N/A
|
2229002-78-0
|
C12H12N2O3
|
| 1-(5-Amino-2-(trifluoromethoxy)phenyl)propan-1-one
|
1-(5-Amino-2-(trifluoromethoxy)phenyl)propan-1-one
|
分子量：233.19
密度：N/A
沸点：N/A
熔点：N/A
|
1803878-34-3
|
C10H10F3NO2
|
| 2-[(2S)-3-(benzyl carboxy)-N-(2,2-dimethylpropyl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]acetic acid
|
2-[(2S)-3-(benzyl carboxy)-N-(2,2-dimethylpropyl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]acetic acid
|
分子量：572.6
密度：N/A
沸点：N/A
熔点：N/A
|
2171148-70-0
|
C33H36N2O7
|
| 1-(4-Hydroxythian-4-yl)-3,3-dimethylcyclobutane-1-carboxylic acid
|
1-(4-Hydroxythian-4-yl)-3,3-dimethylcyclobutane-1-carboxylic acid
|
分子量：244.35
密度：N/A
沸点：N/A
熔点：N/A
|
2172095-76-8
|
C12H20O3S
|
| 1-(3-Hydroxyoxetan-3-yl)-3,3-dimethylcyclobutane-1-carboxylic acid
|
1-(3-Hydroxyoxetan-3-yl)-3,3-dimethylcyclobutane-1-carboxylic acid
|
分子量：200.23
密度：N/A
沸点：N/A
熔点：N/A
|
2172038-83-2
|
C10H16O4
|
| 5-(cyclopropylmethyl)-1-[3-(dimethylamino)propyl]-1H-1,2,3-triazole-4-carboxylic acid
|
5-(cyclopropylmethyl)-1-[3-(dimethylamino)propyl]-1H-1,2,3-triazole-4-carboxylic acid
|
分子量：252.31
密度：N/A
沸点：N/A
熔点：N/A
|
2172570-97-5
|
C12H20N4O2
|
| 5-(cyclopropylmethyl)-1-(3-ethoxypropyl)-1H-1,2,3-triazole-4-carboxylic acid
|
5-(cyclopropylmethyl)-1-(3-ethoxypropyl)-1H-1,2,3-triazole-4-carboxylic acid
|
分子量：253.30
密度：N/A
沸点：N/A
熔点：N/A
|
2172571-12-7
|
C12H19N3O3
|
| 5-(cyclopropylmethyl)-1-(5-hydroxypentyl)-1H-1,2,3-triazole-4-carboxylic acid
|
5-(cyclopropylmethyl)-1-(5-hydroxypentyl)-1H-1,2,3-triazole-4-carboxylic acid
|
分子量：253.30
密度：N/A
沸点：N/A
熔点：N/A
|
2171932-29-7
|
C12H19N3O3
|
| 5-(difluoromethyl)-1-(1-hydroxybutan-2-yl)-1H-1,2,3-triazole-4-carboxylic acid
|
5-(difluoromethyl)-1-(1-hydroxybutan-2-yl)-1H-1,2,3-triazole-4-carboxylic acid
|
分子量：235.19
密度：N/A
沸点：N/A
熔点：N/A
|
2172040-22-9
|
C8H11F2N3O3
|
| (2R)-2-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-5-methoxy-5-oxopentanoic acid
|
(2R)-2-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-5-methoxy-5-oxopentanoic acid
|
分子量：482.5
密度：N/A
沸点：N/A
熔点：N/A
|
2171278-97-8
|
C26H30N2O7
|
| 2-Fluoro-6-(methoxymethyl)phenylboronic Acid Pinacol Ester
|
2-Fluoro-6-(methoxymethyl)phenylboronic Acid Pinacol Ester
|
分子量：266.12
密度：N/A
沸点：N/A
熔点：N/A
|
2614261-71-9
|
C14H20BFO3
|
| 1-(2-(Methylthio)-4-(trifluoromethylthio)phenyl)hydrazine
|
1-(2-(Methylthio)-4-(trifluoromethylthio)phenyl)hydrazine
|
分子量：254.3
密度：N/A
沸点：N/A
熔点：N/A
|
1805721-59-8
|
C8H9F3N2S2
|
| 7-[(tert-butoxy)carbonyl]-9-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-oxa-7-azabicyclo[3.3.1]nonane-9-carboxylic acid
|
7-[(tert-butoxy)carbonyl]-9-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-oxa-7-azabicyclo[3.3.1]nonane-9-carboxylic acid
|
分子量：508.6
密度：N/A
沸点：N/A
熔点：N/A
|
2174007-80-6
|
C28H32N2O7
|
| 3-(1h-Indol-7-yl)benzoic acid
|
3-(1h-Indol-7-yl)benzoic acid
|
分子量：237.25
密度：N/A
沸点：N/A
熔点：N/A
|
1245649-12-0
|
C15H11NO2
|
| 6-(1-Ethoxyethyl)pyridine-3-carboxylic acid
|
6-(1-Ethoxyethyl)pyridine-3-carboxylic acid
|
分子量：195.21
密度：N/A
沸点：N/A
熔点：N/A
|
2172095-36-0
|
C10H13NO3
|
| 1-(3-Hydroxyoxolan-3-yl)cyclopropane-1-carboxylic acid
|
1-(3-Hydroxyoxolan-3-yl)cyclopropane-1-carboxylic acid
|
分子量：172.18
密度：N/A
沸点：N/A
熔点：N/A
|
2172601-53-3
|
C8H12O4
|
| 1-Cyclopentyl-4,4,4-trifluoro-2-methylbutane-1,3-dione
|
1-Cyclopentyl-4,4,4-trifluoro-2-methylbutane-1,3-dione
|
分子量：222.20
密度：N/A
沸点：N/A
熔点：N/A
|
1851007-65-2
|
C10H13F3O2
|
| 4,4-Difluoro-2-methyl-1-(oxolan-3-yl)butane-1,3-dione
|
4,4-Difluoro-2-methyl-1-(oxolan-3-yl)butane-1,3-dione
|
分子量：206.19
密度：N/A
沸点：N/A
熔点：N/A
|
1854204-28-6
|
C9H12F2O3
|
| 2-Tert-butyl-5-(2-methylbutan-2-yl)furan-3-carboxylic acid
|
2-Tert-butyl-5-(2-methylbutan-2-yl)furan-3-carboxylic acid
|
分子量：238.32
密度：N/A
沸点：N/A
熔点：N/A
|
2138130-04-6
|
C14H22O3
|
| 5-{[(tert-butoxy)carbonyl]amino}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylhexanoic acid
|
5-{[(tert-butoxy)carbonyl]amino}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylhexanoic acid
|
分子量：482.6
密度：N/A
沸点：N/A
熔点：N/A
|
2150473-02-0
|
C27H34N2O6
|