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-[4-(5-Methyl-4-phenyl-pyrazol-1-yl)-piperidin-1-ylmethyl]-benzonitrile
|
3-[4-(5-Methyl-4-phenyl-pyrazol-1-yl)-piperidin-1-ylmethyl]-benzonitrile
|
分子量：356.5
密度：N/A
沸点：N/A
熔点：N/A
|
180695-72-1
|
C23H24N4
|
| 3-[5-(1,2-Oxazol-5-yl)-1,2,4-oxadiazol-3-yl]benzoic acid
|
3-[5-(1,2-Oxazol-5-yl)-1,2,4-oxadiazol-3-yl]benzoic acid
|
分子量：257.20
密度：N/A
沸点：N/A
熔点：N/A
|
775304-34-2
|
C12H7N3O4
|
| 2-Ethynyl-2-hydroxycyclopentanone
|
2-Ethynyl-2-hydroxycyclopentanone
|
分子量：124.14
密度：N/A
沸点：N/A
熔点：N/A
|
139071-58-2
|
C7H8O2
|
| 1,2,3,6-Tetramethoxyanthracene-9,10-dione
|
1,2,3,6-Tetramethoxyanthracene-9,10-dione
|
分子量：328.3
密度：N/A
沸点：N/A
熔点：N/A
|
133101-29-8
|
C18H16O6
|
| 2,4-dimethoxy-N-(2-((6-(4-methoxyphenyl)pyridazin-3-yl)oxy)ethyl)benzenesulfonamide
|
2,4-dimethoxy-N-(2-((6-(4-methoxyphenyl)pyridazin-3-yl)oxy)ethyl)benzenesulfonamide
|
分子量：445.5
密度：N/A
沸点：N/A
熔点：N/A
|
1005296-02-5
|
C21H23N3O6S
|
| 4-acetyl-N-(3-(1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl)benzenesulfonamide
|
4-acetyl-N-(3-(1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl)benzenesulfonamide
|
分子量：383.4
密度：N/A
沸点：N/A
熔点：N/A
|
941979-39-1
|
C19H17N3O4S
|
| 2-Bromo-1-(methoxymethyl)-1-methylcyclopropane
|
2-Bromo-1-(methoxymethyl)-1-methylcyclopropane
|
分子量：179.05
密度：N/A
沸点：N/A
熔点：N/A
|
474657-80-2
|
C6H11BrO
|
| N-2-Benzothiazolyl-4-chlorophenylalanine ethyl ester
|
N-2-Benzothiazolyl-4-chlorophenylalanine ethyl ester
|
分子量：360.9
密度：N/A
沸点：N/A
熔点：N/A
|
149105-98-6
|
C18H17ClN2O2S
|
| 6,6-Dimethylbicyclo[3.1.1]hept-2-yl acetaldehyde
|
6,6-Dimethylbicyclo[3.1.1]hept-2-yl acetaldehyde
|
分子量：166.26
密度：N/A
沸点：N/A
熔点：N/A
|
64773-71-3
|
C11H18O
|
| 2-(Perfluorobutylsulfonamido)propanoic Acid
|
2-(Perfluorobutylsulfonamido)propanoic Acid
|
分子量：371.18
密度：N/A
沸点：N/A
熔点：N/A
|
347872-10-0
|
C7H6F9NO4S
|
| 2-(Methylthio)-1-(4-nitrophenyl)ethan-1-one
|
2-(Methylthio)-1-(4-nitrophenyl)ethan-1-one
|
分子量：211.24
密度：N/A
沸点：N/A
熔点：N/A
|
109949-13-5
|
C9H9NO3S
|
| N1-(3-methoxyphenyl)-N2-(4-nitrophenyl)oxalamide
|
N1-(3-methoxyphenyl)-N2-(4-nitrophenyl)oxalamide
|
分子量：315.28
密度：N/A
沸点：N/A
熔点：N/A
|
899743-70-5
|
C15H13N3O5
|
| Phosphonic acid, [(2S)-2-amino-2-(4-fluorophenyl)ethyl]-, diethyl ester
|
Phosphonic acid, [(2S)-2-amino-2-(4-fluorophenyl)ethyl]-, diethyl ester
|
分子量：275.26
密度：N/A
沸点：N/A
熔点：N/A
|
827321-02-8
|
C12H19FNO3P
|
| 2,2-dimethyl-N-[2-(3-methylphenyl)-4-oxo-4H-chromen-6-yl]propanamide
|
2,2-dimethyl-N-[2-(3-methylphenyl)-4-oxo-4H-chromen-6-yl]propanamide
|
分子量：335.4
密度：N/A
沸点：N/A
熔点：N/A
|
923165-24-6
|
C21H21NO3
|
| N1-(3,3-diphenylpropyl)-N2-(4-fluorobenzyl)oxalamide
|
N1-(3,3-diphenylpropyl)-N2-(4-fluorobenzyl)oxalamide
|
分子量：390.4
密度：N/A
沸点：N/A
熔点：N/A
|
941980-33-2
|
C24H23FN2O2
|
| (E)-1-amino-2,4-pentadiene
|
(E)-1-amino-2,4-pentadiene
|
分子量：83.13
密度：N/A
沸点：N/A
熔点：N/A
|
50624-75-4
|
C5H9N
|
| 2-(4-(2-fluorophenyl)piperazin-1-yl)-N-(3-(methylthio)phenyl)-2-oxoacetamide
|
2-(4-(2-fluorophenyl)piperazin-1-yl)-N-(3-(methylthio)phenyl)-2-oxoacetamide
|
分子量：373.4
密度：N/A
沸点：N/A
熔点：N/A
|
941998-58-9
|
C19H20FN3O2S
|
| N1-(4-chlorophenethyl)-N2-(2-(methylthio)phenyl)oxalamide
|
N1-(4-chlorophenethyl)-N2-(2-(methylthio)phenyl)oxalamide
|
分子量：348.8
密度：N/A
沸点：N/A
熔点：N/A
|
941962-90-9
|
C17H17ClN2O2S
|
| 3-Bromo-N-cyclohexyl-6-phenyl-imidazo[1,2-a]pyrazin-8-amine
|
3-Bromo-N-cyclohexyl-6-phenyl-imidazo[1,2-a]pyrazin-8-amine
|
分子量：371.3
密度：N/A
沸点：N/A
熔点：N/A
|
676360-94-4
|
C18H19BrN4
|
| (Rp)-(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl phenylphosphinate
|
(Rp)-(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl phenylphosphinate
|
分子量：279.33
密度：N/A
沸点：N/A
熔点：N/A
|
31352-60-0
|
C16H24O2P+
|
| 2-Ethoxycinnamoyl chloride
|
2-Ethoxycinnamoyl chloride
|
分子量：210.65
密度：N/A
沸点：N/A
熔点：N/A
|
345640-34-8
|
C11H11ClO2
|
| 6,7-dimethoxy-N-naphthalen-2-ylquinazolin-4-amine
|
6,7-dimethoxy-N-naphthalen-2-ylquinazolin-4-amine
|
分子量：331.4
密度：N/A
沸点：N/A
熔点：N/A
|
174892-58-1
|
C20H17N3O2
|
| 7-(3-Amino-3-methyl-1-pyrrolidinyl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
|
7-(3-Amino-3-methyl-1-pyrrolidinyl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
|
分子量：363.4
密度：N/A
沸点：N/A
熔点：N/A
|
108043-91-0
|
C18H19F2N3O3
|
| 8-chloro-6,11-dihydro-11-(1-cyano-4-piperidylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine
|
8-chloro-6,11-dihydro-11-(1-cyano-4-piperidylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine
|
分子量：335.8
密度：N/A
沸点：N/A
熔点：N/A
|
100643-73-0
|
C20H18ClN3
|
| N-(4-Iodophenyl)-N-methylmethanesulphonamide
|
N-(4-Iodophenyl)-N-methylmethanesulphonamide
|
分子量：311.14
密度：N/A
沸点：N/A
熔点：N/A
|
110965-10-1
|
C8H10INO2S
|
| 6-Oxo-3-(1H-imidazol-1-yl)pyridazine-1(6H)-acetic acid
|
6-Oxo-3-(1H-imidazol-1-yl)pyridazine-1(6H)-acetic acid
|
分子量：220.18
密度：N/A
沸点：N/A
熔点：N/A
|
170955-65-4
|
C9H8N4O3
|
| N-[4-[(3,4-Dichloro-6-fluorophenyl)amino]quinazolin-6-yl]acrylamide
|
N-[4-[(3,4-Dichloro-6-fluorophenyl)amino]quinazolin-6-yl]acrylamide
|
分子量：377.2
密度：N/A
沸点：N/A
熔点：N/A
|
558460-09-6
|
C17H11Cl2FN4O
|
| N1-(3-methoxyphenyl)-N2-(3-nitrophenyl)oxalamide
|
N1-(3-methoxyphenyl)-N2-(3-nitrophenyl)oxalamide
|
分子量：315.28
密度：N/A
沸点：N/A
熔点：N/A
|
899978-62-2
|
C15H13N3O5
|
| ethyl 1-(2-oxo-2-phenylethyl)-1H-1,2,4-triazole-3-carboxylate
|
ethyl 1-(2-oxo-2-phenylethyl)-1H-1,2,4-triazole-3-carboxylate
|
分子量：259.26
密度：N/A
沸点：N/A
熔点：N/A
|
106657-10-7
|
C13H13N3O3
|
| 6-Methyl-5-(1-methylethenyl)-2-(phenylmethoxy)-3-pyridinecarboxaldehyde
|
6-Methyl-5-(1-methylethenyl)-2-(phenylmethoxy)-3-pyridinecarboxaldehyde
|
分子量：267.32
密度：N/A
沸点：N/A
熔点：N/A
|
139549-20-5
|
C17H17NO2
|
| 2-{3-[4-(2-Phenylethenesulfonyl)piperazine-1-carbonyl]pyrazin-2-yl}-1,3-benzothiazole
|
2-{3-[4-(2-Phenylethenesulfonyl)piperazine-1-carbonyl]pyrazin-2-yl}-1,3-benzothiazole
|
分子量：491.6
密度：N/A
沸点：N/A
熔点：N/A
|
924723-70-6
|
C24H21N5O3S2
|
| 1-(2-Bromophenyl)-3-phenyl-1H-pyrazol-5-amine
|
1-(2-Bromophenyl)-3-phenyl-1H-pyrazol-5-amine
|
分子量：314.18
密度：N/A
沸点：N/A
熔点：N/A
|
890764-12-2
|
C15H12BrN3
|
| 4-Phenylbut-3-ene-1-thiol
|
4-Phenylbut-3-ene-1-thiol
|
分子量：164.27
密度：N/A
沸点：N/A
熔点：N/A
|
151153-38-7
|
C10H12S
|
| [(1-cyano-1,2-dimethylpropyl)carbamoyl]methyl 1-(4-fluorophenyl)-2,5-dimethyl-1H-pyrrole-3-carboxylate
|
[(1-cyano-1,2-dimethylpropyl)carbamoyl]methyl 1-(4-fluorophenyl)-2,5-dimethyl-1H-pyrrole-3-carboxylate
|
分子量：385.4
密度：N/A
沸点：N/A
熔点：N/A
|
924066-85-3
|
C21H24FN3O3
|
| N-[6-(1-Methylethyl)-2-pyridinyl]-2-naphthalenesulfonamide
|
N-[6-(1-Methylethyl)-2-pyridinyl]-2-naphthalenesulfonamide
|
分子量：326.4
密度：N/A
沸点：N/A
熔点：N/A
|
882014-03-1
|
C18H18N2O2S
|
| 1,3,2-Benzodithiaborole
|
1,3,2-Benzodithiaborole
|
分子量：151.0
密度：N/A
沸点：N/A
熔点：N/A
|
274-29-3
|
C6H4BS2
|
| 2-Bromo-3,6-dimethoxynaphthalene
|
2-Bromo-3,6-dimethoxynaphthalene
|
分子量：267.12
密度：N/A
沸点：N/A
熔点：N/A
|
108238-23-9
|
C12H11BrO2
|
| Rel-annotemoyin-1
|
Rel-annotemoyin-1
|
分子量：564.9
密度：N/A
沸点：N/A
熔点：N/A
|
180892-69-7
|
C35H64O5
|
| 2-Fluoro-2-(1H-imidazol-5-yl)ethanamine;dihydrochloride
|
2-Fluoro-2-(1H-imidazol-5-yl)ethanamine;dihydrochloride
|
分子量：202.05
密度：N/A
沸点：N/A
熔点：N/A
|
64068-30-0
|
C5H10Cl2FN3
|
| (R)-2-amino-3-fluoropropanoic acid hydrochloride
|
(R)-2-amino-3-fluoropropanoic acid hydrochloride
|
分子量：143.54
密度：N/A
沸点：N/A
熔点：N/A
|
59729-22-5
|
C3H7ClFNO2
|
| 3-[5-chloro-1-(2,4-dimethylphenyl)-3-methyl-1H-pyrazol-4-yl]-2-cyano-N-(2-methylphenyl)prop-2-enamide
|
3-[5-chloro-1-(2,4-dimethylphenyl)-3-methyl-1H-pyrazol-4-yl]-2-cyano-N-(2-methylphenyl)prop-2-enamide
|
分子量：404.9
密度：N/A
沸点：N/A
熔点：N/A
|
955867-69-3
|
C23H21ClN4O
|
| 3,4,5-Trimethoxybenzoic acid 2-[[(4-bromophenyl)amino]thioxomethyl]hydrazide
|
3,4,5-Trimethoxybenzoic acid 2-[[(4-bromophenyl)amino]thioxomethyl]hydrazide
|
分子量：440.3
密度：N/A
沸点：N/A
熔点：N/A
|
70452-44-7
|
C17H18BrN3O4S
|
| Methyl 2-formyl-3,3-dimethylbutanoate
|
Methyl 2-formyl-3,3-dimethylbutanoate
|
分子量：158.19
密度：N/A
沸点：N/A
熔点：N/A
|
343270-02-0
|
C8H14O3
|
| 2-Nitro-N-[(3-nitrophenyl)methyl]acetamide
|
2-Nitro-N-[(3-nitrophenyl)methyl]acetamide
|
分子量：239.18
密度：N/A
沸点：N/A
熔点：N/A
|
72078-83-2
|
C9H9N3O5
|
| 5,6,7,8-Tetrahydro-4,9-dimethoxy-1H-benz[f]indole
|
5,6,7,8-Tetrahydro-4,9-dimethoxy-1H-benz[f]indole
|
分子量：231.29
密度：N/A
沸点：N/A
熔点：N/A
|
83514-34-5
|
C14H17NO2
|
| 1-[cyclohexyl(ethyl)carbamoyl]-3-methyl-1H-imidazol-3-ium iodide
|
1-[cyclohexyl(ethyl)carbamoyl]-3-methyl-1H-imidazol-3-ium iodide
|
分子量：363.24
密度：N/A
沸点：N/A
熔点：N/A
|
1078139-34-0
|
C13H22IN3O
|
| 6-Bromo-3-methyl-2H-chromen-2-one
|
6-Bromo-3-methyl-2H-chromen-2-one
|
分子量：239.06
密度：N/A
沸点：N/A
熔点：N/A
|
1215267-14-3
|
C10H7BrO2
|
| 4-[(E)-[(3Z)-3-[(4-carbamimidoylphenyl)methylidene]-2-oxocyclopentylidene]methyl]benzenecarboximidamide
|
4-[(E)-[(3Z)-3-[(4-carbamimidoylphenyl)methylidene]-2-oxocyclopentylidene]methyl]benzenecarboximidamide
|
分子量：344.4
密度：N/A
沸点：N/A
熔点：N/A
|
258519-12-9
|
C21H20N4O
|
| 4-(2-Furanyl)-5-nitro-2-pentanone
|
4-(2-Furanyl)-5-nitro-2-pentanone
|
分子量：197.19
密度：N/A
沸点：N/A
熔点：N/A
|
98996-68-0
|
C9H11NO4
|
| N-(2-Bromo-3-(dimethylamino)allylidene)-N-methylmethanaminium hexafluorophosphate(V)
|
N-(2-Bromo-3-(dimethylamino)allylidene)-N-methylmethanaminium hexafluorophosphate(V)
|
分子量：351.07
密度：N/A
沸点：N/A
熔点：N/A
|
291756-78-0
|
C7H14BrF6N2P
|