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-(1,6-dihydro-1-methyl-6-oxo-3-pyridinyl)-4-Oxazolecarboxylic acid
|
2-(1,6-dihydro-1-methyl-6-oxo-3-pyridinyl)-4-Oxazolecarboxylic acid
|
分子量：220.18
密度：N/A
沸点：N/A
熔点：N/A
|
2068126-83-8
|
C10H8N2O4
|
| Tert-butyl 2-amino-2-(thiophen-3-yl)acetate
|
Tert-butyl 2-amino-2-(thiophen-3-yl)acetate
|
分子量：213.30
密度：N/A
沸点：N/A
熔点：N/A
|
1910805-11-6
|
C10H15NO2S
|
| tert-butyl 2-amino-3-(5-bromo-1H-indol-3-yl)propanoate
|
tert-butyl 2-amino-3-(5-bromo-1H-indol-3-yl)propanoate
|
分子量：339.23
密度：N/A
沸点：N/A
熔点：N/A
|
1922840-22-9
|
C15H19BrN2O2
|
| tert-butyl 4-amino-3,4-dihydro-2H-1-benzopyran-4-carboxylate
|
tert-butyl 4-amino-3,4-dihydro-2H-1-benzopyran-4-carboxylate
|
分子量：249.30
密度：N/A
沸点：N/A
熔点：N/A
|
1993316-81-6
|
C14H19NO3
|
| Tert-butyl 2-amino-2-[2-(trifluoromethoxy)phenyl]acetate
|
Tert-butyl 2-amino-2-[2-(trifluoromethoxy)phenyl]acetate
|
分子量：291.27
密度：N/A
沸点：N/A
熔点：N/A
|
1922861-28-6
|
C13H16F3NO3
|
| 1-(2-Methoxy-5-methylbenzenesulfonyl)-4-(thiophen-3-yloxy)piperidine
|
1-(2-Methoxy-5-methylbenzenesulfonyl)-4-(thiophen-3-yloxy)piperidine
|
分子量：367.5
密度：N/A
沸点：N/A
熔点：N/A
|
2097857-11-7
|
C17H21NO4S2
|
| Tert-butyl n-{octahydro-1h-cyclopenta[c]pyridin-5-yl}carbamate
|
Tert-butyl n-{octahydro-1h-cyclopenta[c]pyridin-5-yl}carbamate
|
分子量：240.34
密度：N/A
沸点：N/A
熔点：N/A
|
1934530-47-8
|
C13H24N2O2
|
| tert-ButylN-{5-aminospiro[3.3]heptan-2-yl}carbamate
|
tert-ButylN-{5-aminospiro[3.3]heptan-2-yl}carbamate
|
分子量：226.32
密度：N/A
沸点：N/A
熔点：N/A
|
1935471-36-5
|
C12H22N2O2
|
| Tert-butyl (5-oxooctahydropentalen-2-YL)carbamate
|
Tert-butyl (5-oxooctahydropentalen-2-YL)carbamate
|
分子量：239.31
密度：N/A
沸点：N/A
熔点：N/A
|
1934426-37-5
|
C13H21NO3
|
| Rel-tert-butyl (2S,3S)-3-amino-2-(trifluoromethyl)piperidine-1-carboxylate
|
Rel-tert-butyl (2S,3S)-3-amino-2-(trifluoromethyl)piperidine-1-carboxylate
|
分子量：268.28
密度：N/A
沸点：N/A
熔点：N/A
|
1368341-01-8
|
C11H19F3N2O2
|
| 8-Bromo-3-methyl-1H-pyrrolo[3,2-f]quinolin-2(3H)-one
|
8-Bromo-3-methyl-1H-pyrrolo[3,2-f]quinolin-2(3H)-one
|
分子量：277.12
密度：N/A
沸点：N/A
熔点：N/A
|
2097993-95-6
|
C12H9BrN2O
|
| 3-(Pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine-6-thiol
|
3-(Pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine-6-thiol
|
分子量：229.26
密度：N/A
沸点：N/A
熔点：N/A
|
2097932-86-8
|
C10H7N5S
|
| 3-[6-(3-Nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]pyridine
|
3-[6-(3-Nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]pyridine
|
分子量：318.29
密度：N/A
沸点：N/A
熔点：N/A
|
2098117-38-3
|
C16H10N6O2
|
| 2-(2-((6-(4-Fluorophenyl)pyridazin-3-yl)oxy)ethyl)isoindoline-1,3-dione
|
2-(2-((6-(4-Fluorophenyl)pyridazin-3-yl)oxy)ethyl)isoindoline-1,3-dione
|
分子量：363.3
密度：N/A
沸点：N/A
熔点：N/A
|
2097937-36-3
|
C20H14FN3O3
|
| 2-[(Tert-butoxy)carbonyl]-octahydropyrrolo[1,2-a]piperazine-1-carboxylic acid
|
2-[(Tert-butoxy)carbonyl]-octahydropyrrolo[1,2-a]piperazine-1-carboxylic acid
|
分子量：270.32
密度：N/A
沸点：N/A
熔点：N/A
|
2243503-41-3
|
C13H22N2O4
|
| 4-amino-N-methylbut-2-enamide
|
4-amino-N-methylbut-2-enamide
|
分子量：114.15
密度：N/A
沸点：N/A
熔点：N/A
|
1868921-77-0
|
C5H10N2O
|
| 4-[(Dimethylamino)methyl]-1-methyl-1H-pyrazole-3-carboxylic acid
|
4-[(Dimethylamino)methyl]-1-methyl-1H-pyrazole-3-carboxylic acid
|
分子量：183.21
密度：N/A
沸点：N/A
熔点：N/A
|
2091368-80-6
|
C8H13N3O2
|
| ethyl 4-(2-aminoethyl)-1-methyl-1H-pyrazole-3-carboxylate
|
ethyl 4-(2-aminoethyl)-1-methyl-1H-pyrazole-3-carboxylate
|
分子量：197.23
密度：N/A
沸点：N/A
熔点：N/A
|
2106681-20-1
|
C9H15N3O2
|
| ethyl 4-(azidomethyl)-1-methyl-1H-pyrazole-3-carboxylate
|
ethyl 4-(azidomethyl)-1-methyl-1H-pyrazole-3-carboxylate
|
分子量：209.21
密度：N/A
沸点：N/A
熔点：N/A
|
1657020-85-3
|
C8H11N5O2
|
| 4-[(9H-Fluoren-9-ylmethoxycarbonylamino)-methyl]-cyclohexa-1,5-dienecarboxylic acid
|
4-[(9H-Fluoren-9-ylmethoxycarbonylamino)-methyl]-cyclohexa-1,5-dienecarboxylic acid
|
分子量：375.4
密度：N/A
沸点：N/A
熔点：N/A
|
2565806-76-8
|
C23H21NO4
|
| [5-Chloro-2-(2-dimethoxymethyl-phenylsulfanyl)-phenyl]-methanol
|
[5-Chloro-2-(2-dimethoxymethyl-phenylsulfanyl)-phenyl]-methanol
|
分子量：324.8
密度：N/A
沸点：N/A
熔点：N/A
|
2565807-40-9
|
C16H17ClO3S
|
| 1-Tert-butyl 4-methyl 4-(prop-2-yn-1-yl)piperidine-1,4-dicarboxylate
|
1-Tert-butyl 4-methyl 4-(prop-2-yn-1-yl)piperidine-1,4-dicarboxylate
|
分子量：281.35
密度：N/A
沸点：N/A
熔点：N/A
|
2199503-30-3
|
C15H23NO4
|
| tert-Butyl 3-(5-bromopyridin-2-yl)pyrrolidine-1-carboxylate
|
tert-Butyl 3-(5-bromopyridin-2-yl)pyrrolidine-1-carboxylate
|
分子量：327.22
密度：N/A
沸点：N/A
熔点：N/A
|
1245914-48-0
|
C14H19BrN2O2
|
| 5-(2-Fluorophenyl)-1H-pyrrole-2-carboxylic acid
|
5-(2-Fluorophenyl)-1H-pyrrole-2-carboxylic acid
|
分子量：205.18
密度：N/A
沸点：N/A
熔点：N/A
|
2092234-66-5
|
C11H8FNO2
|
| 2-((3-(4-Hydroxytetrahydro-2H-pyran-4-yl)prop-2-yn-1-yl)oxy)benzaldehyde
|
2-((3-(4-Hydroxytetrahydro-2H-pyran-4-yl)prop-2-yn-1-yl)oxy)benzaldehyde
|
分子量：260.28
密度：N/A
沸点：N/A
熔点：N/A
|
2108806-22-8
|
C15H16O4
|
| 3-Bromo-1-(methoxymethyl)-n,n-dimethyl-1h-1,2,4-triazol-5-amine
|
3-Bromo-1-(methoxymethyl)-n,n-dimethyl-1h-1,2,4-triazol-5-amine
|
分子量：235.08
密度：N/A
沸点：N/A
熔点：N/A
|
2090280-13-8
|
C6H11BrN4O
|
| 2-(3-Chloro-1h-1,2,4-triazol-1-yl)isonicotinic acid
|
2-(3-Chloro-1h-1,2,4-triazol-1-yl)isonicotinic acid
|
分子量：224.60
密度：N/A
沸点：N/A
熔点：N/A
|
2090414-76-7
|
C8H5ClN4O2
|
| 4-(3-Azidopropoxy)-3,5-dimethoxybenzoic acid
|
4-(3-Azidopropoxy)-3,5-dimethoxybenzoic acid
|
分子量：281.26
密度：N/A
沸点：N/A
熔点：N/A
|
2096986-74-0
|
C12H15N3O5
|
| (2,2-Dimethyltetrahydrofuran-3-yl)methanol
|
(2,2-Dimethyltetrahydrofuran-3-yl)methanol
|
分子量：130.18
密度：N/A
沸点：N/A
熔点：N/A
|
39161-14-3
|
C7H14O2
|
| 2-(4-Methoxyphenyl)hexahydropyrrolo[3,4-c]pyrrol-1(2h)-one
|
2-(4-Methoxyphenyl)hexahydropyrrolo[3,4-c]pyrrol-1(2h)-one
|
分子量：232.28
密度：N/A
沸点：N/A
熔点：N/A
|
2096987-47-0
|
C13H16N2O2
|
| 1-Benzyl-7a-methylhexahydropyrrolo[3,4-d][1,3]oxazin-2(1H)-one
|
1-Benzyl-7a-methylhexahydropyrrolo[3,4-d][1,3]oxazin-2(1H)-one
|
分子量：246.30
密度：N/A
沸点：N/A
熔点：N/A
|
2104152-62-5
|
C14H18N2O2
|
| FC1=CC=C(CC2C(N(C(N(C2=O)C)=O)C)=O)C=C1
|
FC1=CC=C(CC2C(N(C(N(C2=O)C)=O)C)=O)C=C1
|
分子量：264.25
密度：N/A
沸点：N/A
熔点：N/A
|
2027543-02-6
|
C13H13FN2O3
|
| N-(2,6-difluorophenyl)-3-(quinoxalin-2-yloxy)pyrrolidine-1-carboxamide
|
N-(2,6-difluorophenyl)-3-(quinoxalin-2-yloxy)pyrrolidine-1-carboxamide
|
分子量：370.4
密度：N/A
沸点：N/A
熔点：N/A
|
2097916-76-0
|
C19H16F2N4O2
|
| 1-(6-cyclopropylpyridazin-3-yl)-N-(6-methoxypyridin-3-yl)piperidine-3-carboxamide
|
1-(6-cyclopropylpyridazin-3-yl)-N-(6-methoxypyridin-3-yl)piperidine-3-carboxamide
|
分子量：353.4
密度：N/A
沸点：N/A
熔点：N/A
|
2097888-30-5
|
C19H23N5O2
|
| 4-nitro-N-[(1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]benzene-1-sulfonamide
|
4-nitro-N-[(1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]benzene-1-sulfonamide
|
分子量：347.4
密度：N/A
沸点：N/A
熔点：N/A
|
2031755-49-2
|
C16H17N3O4S
|
| 1-[1-(2-Nitrobenzenesulfonyl)pyrrolidin-3-yl]piperazine
|
1-[1-(2-Nitrobenzenesulfonyl)pyrrolidin-3-yl]piperazine
|
分子量：340.40
密度：N/A
沸点：N/A
熔点：N/A
|
2040733-73-9
|
C14H20N4O4S
|
| (1r,3r)-3-[(5-Fluoropyridin-3-yl)oxy]cyclobutan-1-amine
|
(1r,3r)-3-[(5-Fluoropyridin-3-yl)oxy]cyclobutan-1-amine
|
分子量：182.19
密度：N/A
沸点：N/A
熔点：N/A
|
2379587-42-3
|
C9H11FN2O
|
| 2-Ethyl-4-(2,2,3,3-tetramethylcyclopropyl)-1,3-thiazole
|
2-Ethyl-4-(2,2,3,3-tetramethylcyclopropyl)-1,3-thiazole
|
分子量：209.35
密度：N/A
沸点：N/A
熔点：N/A
|
2060062-83-9
|
C12H19NS
|
| tert-butyl (2S)-2-[3-(3,3-dimethylbutanesulfonyl)propyl]pyrrolidine-1-carboxylate
|
tert-butyl (2S)-2-[3-(3,3-dimethylbutanesulfonyl)propyl]pyrrolidine-1-carboxylate
|
分子量：361.5
密度：N/A
沸点：N/A
熔点：N/A
|
1670273-32-1
|
C18H35NO4S
|
| N-{[2-(methoxymethyl)pyrrolidin-2-yl]methyl}-2-nitrobenzene-1-sulfonamide
|
N-{[2-(methoxymethyl)pyrrolidin-2-yl]methyl}-2-nitrobenzene-1-sulfonamide
|
分子量：329.37
密度：N/A
沸点：N/A
熔点：N/A
|
2030836-04-3
|
C13H19N3O5S
|
| N-{[2-(methoxymethyl)pyrrolidin-2-yl]methyl}-4-nitrobenzene-1-sulfonamide
|
N-{[2-(methoxymethyl)pyrrolidin-2-yl]methyl}-4-nitrobenzene-1-sulfonamide
|
分子量：329.37
密度：N/A
沸点：N/A
熔点：N/A
|
2037390-63-7
|
C13H19N3O5S
|
| 2,4-Dichloro-3-methylmandelic acid
|
2,4-Dichloro-3-methylmandelic acid
|
分子量：235.06
密度：N/A
沸点：N/A
熔点：N/A
|
1803779-89-6
|
C9H8Cl2O3
|
| 3,4-Dichloro-5-methylmandelic acid
|
3,4-Dichloro-5-methylmandelic acid
|
分子量：235.06
密度：N/A
沸点：N/A
熔点：N/A
|
1803813-44-6
|
C9H8Cl2O3
|
| 3,5-Dichloro-4-methylmandelic acid
|
3,5-Dichloro-4-methylmandelic acid
|
分子量：235.06
密度：N/A
沸点：N/A
熔点：N/A
|
1804896-70-5
|
C9H8Cl2O3
|
| 3,6-Dichloro-2-methylmandelic acid
|
3,6-Dichloro-2-methylmandelic acid
|
分子量：235.06
密度：N/A
沸点：N/A
熔点：N/A
|
1806347-63-6
|
C9H8Cl2O3
|
| 3,5-Dichloro-4-methylphenylacetic acid
|
3,5-Dichloro-4-methylphenylacetic acid
|
分子量：219.06
密度：N/A
沸点：N/A
熔点：N/A
|
1803780-33-7
|
C9H8Cl2O2
|
| Ethyl 2,3-dichloro-5-methylphenylacetate
|
Ethyl 2,3-dichloro-5-methylphenylacetate
|
分子量：247.11
密度：N/A
沸点：N/A
熔点：N/A
|
1806304-59-5
|
C11H12Cl2O2
|
| 3,4-Dichloro-5-methylphenylacetonitrile
|
3,4-Dichloro-5-methylphenylacetonitrile
|
分子量：200.06
密度：N/A
沸点：N/A
熔点：N/A
|
1806284-83-2
|
C9H7Cl2N
|
| 3,4-Dichloro-5-nitroaniline
|
3,4-Dichloro-5-nitroaniline
|
分子量：207.01
密度：N/A
沸点：N/A
熔点：N/A
|
1806348-70-8
|
C6H4Cl2N2O2
|
| 3,6-Dichloro-2-nitrobenzenesulfonamide
|
3,6-Dichloro-2-nitrobenzenesulfonamide
|
分子量：271.08
密度：N/A
沸点：N/A
熔点：N/A
|
1806305-01-0
|
C6H4Cl2N2O4S
|