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-Methylpyrido[3,2-d]pyrimidin-4-amine
|
2-Methylpyrido[3,2-d]pyrimidin-4-amine
|
分子量：160.18
密度：N/A
沸点：N/A
熔点：N/A
|
50786-34-0
|
C8H8N4
|
| 2-((But-3-yn-1-yloxy)methyl)pyrazine
|
2-((But-3-yn-1-yloxy)methyl)pyrazine
|
分子量：162.19
密度：N/A
沸点：N/A
熔点：N/A
|
126473-94-7
|
C9H10N2O
|
| (3,4-Diacetyloxy-5-bromophenyl) acetate
|
(3,4-Diacetyloxy-5-bromophenyl) acetate
|
分子量：331.12
密度：N/A
沸点：N/A
熔点：N/A
|
38475-38-6
|
C12H11BrO6
|
| N-(2-furylmethyl)-2-(1-oxo-1H-isochromen-3-yl)benzamide
|
N-(2-furylmethyl)-2-(1-oxo-1H-isochromen-3-yl)benzamide
|
分子量：345.3
密度：N/A
沸点：N/A
熔点：N/A
|
920480-79-1
|
C21H15NO4
|
| 4-chloro-N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-5-yl]benzamide
|
4-chloro-N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-5-yl]benzamide
|
分子量：424.3
密度：N/A
沸点：N/A
熔点：N/A
|
923123-14-2
|
C23H15Cl2NO3
|
| 1-[4-(2-Hydroxy-3-{4-[3-(trifluoromethyl)phenyl]piperazin-1-YL}propoxy)phenyl]propan-1-one hydrochloride
|
1-[4-(2-Hydroxy-3-{4-[3-(trifluoromethyl)phenyl]piperazin-1-YL}propoxy)phenyl]propan-1-one hydrochloride
|
分子量：472.9
密度：N/A
沸点：N/A
熔点：N/A
|
1215534-33-0
|
C23H28ClF3N2O3
|
| Ethyl 6-(2-fluorobenzamido)-3-methylbenzofuran-2-carboxylate
|
Ethyl 6-(2-fluorobenzamido)-3-methylbenzofuran-2-carboxylate
|
分子量：341.3
密度：N/A
沸点：N/A
熔点：N/A
|
923147-43-7
|
C19H16FNO4
|
| Ethyl 6-(2-chlorobenzamido)-3-methylbenzofuran-2-carboxylate
|
Ethyl 6-(2-chlorobenzamido)-3-methylbenzofuran-2-carboxylate
|
分子量：357.8
密度：N/A
沸点：N/A
熔点：N/A
|
923250-11-7
|
C19H16ClNO4
|
| N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]furan-2-carboxamide
|
N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]furan-2-carboxamide
|
分子量：379.8
密度：N/A
沸点：N/A
熔点：N/A
|
923165-19-9
|
C21H14ClNO4
|
| N-(2-benzoyl-3-methyl-1-benzofuran-6-yl)-2-chlorobenzamide
|
N-(2-benzoyl-3-methyl-1-benzofuran-6-yl)-2-chlorobenzamide
|
分子量：389.8
密度：N/A
沸点：N/A
熔点：N/A
|
923218-04-6
|
C23H16ClNO3
|
| 2-iodo-4-[3-(trifluoromethyl)-3H-diazirin-3-yl]benzoic acid
|
2-iodo-4-[3-(trifluoromethyl)-3H-diazirin-3-yl]benzoic acid
|
分子量：356.04
密度：N/A
沸点：N/A
熔点：N/A
|
400781-06-8
|
C9H4F3IN2O2
|
| N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]-2-fluorobenzamide
|
N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]-2-fluorobenzamide
|
分子量：407.8
密度：N/A
沸点：N/A
熔点：N/A
|
923244-09-1
|
C23H15ClFNO3
|
| 4-Chlorophenyl 6-{[(4-methoxyphenyl)sulfonyl]amino}-3-methylbenzo[d]furan-2-yl ketone
|
4-Chlorophenyl 6-{[(4-methoxyphenyl)sulfonyl]amino}-3-methylbenzo[d]furan-2-yl ketone
|
分子量：455.9
密度：N/A
沸点：N/A
熔点：N/A
|
923201-93-8
|
C23H18ClNO5S
|
| 3-Ethyl-I+/-,I(2)-dimethyl-I+/--(1-methylethyl)-4-pyridineethanol
|
3-Ethyl-I+/-,I(2)-dimethyl-I+/--(1-methylethyl)-4-pyridineethanol
|
分子量：221.34
密度：N/A
沸点：N/A
熔点：N/A
|
131666-05-2
|
C14H23NO
|
| 4-bromo-N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]benzamide
|
4-bromo-N-[2-(4-chlorobenzoyl)-3-methyl-1-benzofuran-6-yl]benzamide
|
分子量：468.7
密度：N/A
沸点：N/A
熔点：N/A
|
923195-34-0
|
C23H15BrClNO3
|
| 5-chloro-N-(2,6-dichlorophenyl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide
|
5-chloro-N-(2,6-dichlorophenyl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide
|
分子量：362.7
密度：N/A
沸点：N/A
熔点：N/A
|
902251-00-7
|
C13H10Cl3N3OS
|
| N-[2-(4-methylphenyl)-4-oxochromen-6-yl]acetamide
|
N-[2-(4-methylphenyl)-4-oxochromen-6-yl]acetamide
|
分子量：293.3
密度：N/A
沸点：N/A
熔点：N/A
|
198329-82-7
|
C18H15NO3
|
| 3-(1-Phenyl-3-p-tolyl-1H-pyrazol-4-yl)propanoic acid
|
3-(1-Phenyl-3-p-tolyl-1H-pyrazol-4-yl)propanoic acid
|
分子量：306.4
密度：N/A
沸点：N/A
熔点：N/A
|
108446-81-7
|
C19H18N2O2
|
| Benzenemethanol, I+/--(1,1-dimethylethyl)-, 1-acetate, (I+/-R)-
|
Benzenemethanol, I+/--(1,1-dimethylethyl)-, 1-acetate, (I+/-R)-
|
分子量：206.28
密度：N/A
沸点：N/A
熔点：N/A
|
23439-90-9
|
C13H18O2
|
| 4-(3-Phenyl-pyrazolo[1,5-A]pyrimidin-6-YL)-phenol methanesulfonate
|
4-(3-Phenyl-pyrazolo[1,5-A]pyrimidin-6-YL)-phenol methanesulfonate
|
分子量：383.4
密度：N/A
沸点：N/A
熔点：N/A
|
1177295-41-8
|
C19H17N3O4S
|
| Methyl 2-[4-(2-bromoacetyl)-3-methylphenoxy]acetate
|
Methyl 2-[4-(2-bromoacetyl)-3-methylphenoxy]acetate
|
分子量：301.13
密度：N/A
沸点：N/A
熔点：N/A
|
166954-86-5
|
C12H13BrO4
|
| 1-(Pyrrolidin-1-ylsulfonyl)piperazine hydrochloride
|
1-(Pyrrolidin-1-ylsulfonyl)piperazine hydrochloride
|
分子量：255.77
密度：N/A
沸点：N/A
熔点：N/A
|
1171085-92-9
|
C8H18ClN3O2S
|
| Benzyloxyacetylene
|
Benzyloxyacetylene
|
分子量：132.16
密度：N/A
沸点：N/A
熔点：N/A
|
40089-12-1
|
C9H8O
|
| 5-[(4-Bromophenyl)methyl]-2-(3-methoxyphenyl)imidazo[4,5-c]pyridine
|
5-[(4-Bromophenyl)methyl]-2-(3-methoxyphenyl)imidazo[4,5-c]pyridine
|
分子量：394.3
密度：N/A
沸点：N/A
熔点：N/A
|
645420-99-1
|
C20H16BrN3O
|
| 1-ethyl-3-methyl-4-(3-propan-2-yloxyphenyl)-3,6-dihydro-2H-pyridine
|
1-ethyl-3-methyl-4-(3-propan-2-yloxyphenyl)-3,6-dihydro-2H-pyridine
|
分子量：259.4
密度：N/A
沸点：N/A
熔点：N/A
|
143919-47-5
|
C17H25NO
|
| 4-Chloro-5-fluoro-3-nitroquinoline
|
4-Chloro-5-fluoro-3-nitroquinoline
|
分子量：226.59
密度：N/A
沸点：N/A
熔点：N/A
|
1025970-02-8
|
C9H4ClFN2O2
|
| N-(3,5-dimethoxyphenyl)-2-((3-phenyl-1,4-diazaspiro[4.4]nona-1,3-dien-2-yl)thio)acetamide
|
N-(3,5-dimethoxyphenyl)-2-((3-phenyl-1,4-diazaspiro[4.4]nona-1,3-dien-2-yl)thio)acetamide
|
分子量：423.5
密度：N/A
沸点：N/A
熔点：N/A
|
899906-08-2
|
C23H25N3O3S
|
| Benzyl 4-(4-(chlorosulfonyl)phenyl)piperazine-1-carboxylate
|
Benzyl 4-(4-(chlorosulfonyl)phenyl)piperazine-1-carboxylate
|
分子量：394.9
密度：N/A
沸点：N/A
熔点：N/A
|
125393-31-9
|
C18H19ClN2O4S
|
| 5-(Methylsulfanyl)pent-1-en-3-one
|
5-(Methylsulfanyl)pent-1-en-3-one
|
分子量：130.21
密度：N/A
沸点：N/A
熔点：N/A
|
80727-29-3
|
C6H10OS
|
| 3-(4-chlorophenyl)-N-[(furan-2-yl)methyl]-[1,2,3]triazolo[1,5-a]quinazolin-5-amine
|
3-(4-chlorophenyl)-N-[(furan-2-yl)methyl]-[1,2,3]triazolo[1,5-a]quinazolin-5-amine
|
分子量：375.8
密度：N/A
沸点：N/A
熔点：N/A
|
902285-14-7
|
C20H14ClN5O
|
| (2-Fluoro-2-methylpropyl)hydrazine
|
(2-Fluoro-2-methylpropyl)hydrazine
|
分子量：106.14
密度：N/A
沸点：N/A
熔点：N/A
|
126889-86-9
|
C4H11FN2
|
| 5-chloro-N-(3-methoxypropyl)-2-(methylsulfanyl)pyrimidine-4-carboxamide
|
5-chloro-N-(3-methoxypropyl)-2-(methylsulfanyl)pyrimidine-4-carboxamide
|
分子量：275.76
密度：N/A
沸点：N/A
熔点：N/A
|
902243-40-7
|
C10H14ClN3O2S
|
| 4-(3-Aminopropyl)heptane-1,7-diamine
|
4-(3-Aminopropyl)heptane-1,7-diamine
|
分子量：187.33
密度：N/A
沸点：N/A
熔点：N/A
|
123652-86-8
|
C10H25N3
|
| Hydrazinecarboxylic acid 2-trimethylsilanyl-ethyl ester
|
Hydrazinecarboxylic acid 2-trimethylsilanyl-ethyl ester
|
分子量：176.29
密度：N/A
沸点：N/A
熔点：N/A
|
154876-20-7
|
C6H16N2O2Si
|
| 2h-Imidazol-2-one,1-(3,4-dichlorophenyl)-1,3-dihydro-3-methyl-
|
2h-Imidazol-2-one,1-(3,4-dichlorophenyl)-1,3-dihydro-3-methyl-
|
分子量：243.09
密度：N/A
沸点：N/A
熔点：N/A
|
1207-65-4
|
C10H8Cl2N2O
|
| 2-Ethyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid
|
2-Ethyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid
|
分子量：224.24
密度：N/A
沸点：N/A
熔点：N/A
|
79932-65-3
|
C9H8N2O3S
|
| 2-(6-Phenoxypyridin-3-yl)acetonitrile
|
2-(6-Phenoxypyridin-3-yl)acetonitrile
|
分子量：210.23
密度：N/A
沸点：N/A
熔点：N/A
|
57958-56-2
|
C13H10N2O
|
| 2-[2-(4-Hydroxy-piperidin-1-yl)-ethyl]-isoindole-1,3-dione
|
2-[2-(4-Hydroxy-piperidin-1-yl)-ethyl]-isoindole-1,3-dione
|
分子量：274.31
密度：N/A
沸点：N/A
熔点：N/A
|
101620-61-5
|
C15H18N2O3
|
| Ethyl 5-(2,4-dichlorophenyl)-1-(4-methoxyphenyl)-2-methyl-1h-pyrrole-3-carboxylate
|
Ethyl 5-(2,4-dichlorophenyl)-1-(4-methoxyphenyl)-2-methyl-1h-pyrrole-3-carboxylate
|
分子量：404.3
密度：N/A
沸点：N/A
熔点：N/A
|
723303-27-3
|
C21H19Cl2NO3
|
| N-Methoxy-N-methylpropiolamide
|
N-Methoxy-N-methylpropiolamide
|
分子量：113.11
密度：N/A
沸点：N/A
熔点：N/A
|
130250-60-1
|
C5H7NO2
|
| 2-Carbomethoxy-4-cyano-4-(3-cyclopentyloxy-4-difluoromethoxyphenyl)cyclohexan-1-one
|
2-Carbomethoxy-4-cyano-4-(3-cyclopentyloxy-4-difluoromethoxyphenyl)cyclohexan-1-one
|
分子量：407.4
密度：N/A
沸点：N/A
熔点：N/A
|
153587-13-4
|
C21H23F2NO5
|
| n-[3-(3-Pyridin-2-yl-4-quinolin-4-yl-pyrazol-1-yl)-propyl]-methanesulfonamide
|
n-[3-(3-Pyridin-2-yl-4-quinolin-4-yl-pyrazol-1-yl)-propyl]-methanesulfonamide
|
分子量：407.5
密度：N/A
沸点：N/A
熔点：N/A
|
746666-58-0
|
C21H21N5O2S
|
| 4-[(4-Acetyl-3-hydroxy-2-propylphenoxy)methyl]benzoic acid
|
4-[(4-Acetyl-3-hydroxy-2-propylphenoxy)methyl]benzoic acid
|
分子量：328.4
密度：N/A
沸点：N/A
熔点：N/A
|
87807-96-3
|
C19H20O5
|
| Methyl 2-(2-oxopyrrolidin-1-yl)-2-phenylacetate
|
Methyl 2-(2-oxopyrrolidin-1-yl)-2-phenylacetate
|
分子量：233.26
密度：N/A
沸点：N/A
熔点：N/A
|
60729-85-3
|
C13H15NO3
|
| 1-Decyl-2,4,5-imidazolidinetrione
|
1-Decyl-2,4,5-imidazolidinetrione
|
分子量：254.33
密度：N/A
沸点：N/A
熔点：N/A
|
105685-96-9
|
C13H22N2O3
|
| Ethynyl(4-bromophenyl) ketone
|
Ethynyl(4-bromophenyl) ketone
|
分子量：209.04
密度：N/A
沸点：N/A
熔点：N/A
|
54012-24-7
|
C9H5BrO
|
| 5-isopropoxy-3-(4-methylcarbamoylphenoxy)-N-thiazol-2-ylbenzamide
|
5-isopropoxy-3-(4-methylcarbamoylphenoxy)-N-thiazol-2-ylbenzamide
|
分子量：411.5
密度：N/A
沸点：N/A
熔点：N/A
|
752239-44-4
|
C21H21N3O4S
|
| 2,9,10-Tribromo-9,10-dihydro-1-thiabenzo[f]azulen-4-one
|
2,9,10-Tribromo-9,10-dihydro-1-thiabenzo[f]azulen-4-one
|
分子量：451.0
密度：N/A
沸点：N/A
熔点：N/A
|
111428-55-8
|
C13H7Br3OS
|
| N-Boc-N-hexyl-glycine
|
N-Boc-N-hexyl-glycine
|
分子量：259.34
密度：N/A
沸点：N/A
熔点：N/A
|
110106-56-4
|
C13H25NO4
|
| 2-(7-Methoxy-2H-1,3-benzodioxol-5-yl)acetonitrile
|
2-(7-Methoxy-2H-1,3-benzodioxol-5-yl)acetonitrile
|
分子量：191.18
密度：N/A
沸点：N/A
熔点：N/A
|
36200-29-0
|
C10H9NO3
|