A CAS Registry Number,also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganiccompounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It currently identifies more than 144 million unique organic and inorganic substances and 67 million protein and DNA sequences,plus additional information about each substance. It is updated with around 15,000 additional new substances daily.(information coming from wikipedia.org)
Name |
Molecular Formula |
Chemical & Physical Properties |
CAS Number |
2-chloro-4-acetamidoacetophenone |
C10H10ClNO2 |
Molecular Weight:211.64500 Density:1.274 g/cm3 Boiling Point:382.9ºC at 760 mmHg Melting Point:N/A |
103273-72-9 |
a-Aminopropiophenone |
C9H11NO |
Molecular Weight:149.190 Density:1.1±0.1 g/cm3 Boiling Point:266.9±13.0 °C at 760 mmHg Melting Point:N/A |
1196-28-7 |
2-(3-chloro-2-oxo-1,3-dihydroindol-4-yl)ethyl benzoate |
C17H14ClNO3 |
Molecular Weight:315.75100 Density:N/A Boiling Point:N/A Melting Point:N/A |
139122-17-1 |
N-(1-METHYLPIPERIDIN-4-YL)ANILINE |
C12H18N2 |
Molecular Weight:190.28500 Density:1.042g/cm3 Boiling Point:302.4ºC at 760mmHg Melting Point:82-86ºC |
22261-94-5 |
1-METHYL-2-BENZIMIDAZOLINONE |
C8H8N2O |
Molecular Weight:148.16200 Density:1.213g/cm3 Boiling Point:N/A Melting Point:192-196ºC |
1849-01-0 |
1-Methyl-1H-benzimidazole-2-carbaldehyde |
C9H8N2O |
Molecular Weight:160.173 Density:1.2±0.1 g/cm3 Boiling Point:332.7±25.0 °C at 760 mmHg Melting Point:114-116 °C |
3012-80-4 |
3-Amino-4-(methoxycarbonyl)benzoic acid |
C9H9NO4 |
Molecular Weight:195.172 Density:1.4±0.1 g/cm3 Boiling Point:394.9±32.0 °C at 760 mmHg Melting Point:217-220 °C(lit.) |
60728-41-8 |
1-Methyl-1H-imidazole-2-carboxylic acid |
C5H6N2O2 |
Molecular Weight:126.113 Density:1.3±0.1 g/cm3 Boiling Point:339.4±25.0 °C at 760 mmHg Melting Point:104 °C |
20485-43-2 |
1-Naphthalenecarboxylicacid, methyl ester |
C12H10O2 |
Molecular Weight:186.20700 Density:1.153g/cm3 Boiling Point:303.8ºC at 760mmHg Melting Point:N/A |
2459-24-7 |
1-methyl-1h-benzimidazole-2-sulfonic acid |
C8H8N2O3S |
Molecular Weight:212.22600 Density:1.55g/cm3 Boiling Point:N/A Melting Point:341ºC |
5533-38-0 |
pent-1-en-4-yn-3-ol |
C5H6O |
Molecular Weight:82.10050 Density:0.935g/cm3 Boiling Point:111.376ºC at 760 mmHg Melting Point:N/A |
14304-27-9 |
Benzoic acid, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitro-, 2-ethoxy-1-methyl-2-oxoethyl ester |
C19H15ClF3NO7 |
Molecular Weight:461.77300 Density:N/A Boiling Point:N/A Melting Point:N/A |
83513-60-4 |
PicrosideⅡ |
C29H38N2O3 |
Molecular Weight:462.62400 Density:N/A Boiling Point:N/A Melting Point:N/A |
989-81-1 |
4-Chloro-2,6-dimethyl-nicotinic acid ,97 |
C8H8ClNO2 |
Molecular Weight:185.60800 Density:N/A Boiling Point:N/A Melting Point:N/A |
56022-09-4 |
Methan-d2-ol-d |
CHD3O |
Molecular Weight:35.06030 Density:N/A Boiling Point:N/A Melting Point:N/A |
53952-43-5 |
3-Nitro-2-xylene |
C8H9NO2 |
Molecular Weight:151.163 Density:1.1±0.1 g/cm3 Boiling Point:243.3±9.0 °C at 760 mmHg Melting Point:7-9 °C(lit.) |
83-41-0 |
2-Amino-4-chlorothiophenol |
C6H6ClNS |
Molecular Weight:159.637 Density:1.4±0.1 g/cm3 Boiling Point:281.2±20.0 °C at 760 mmHg Melting Point:56-61 °C(lit.) |
1004-00-8 |
1,4-Benzene dimethanethiol |
C8H10S2 |
Molecular Weight:170.295 Density:1.1±0.1 g/cm3 Boiling Point:292.1±20.0 °C at 760 mmHg Melting Point:45-46 °C(lit.) |
105-09-9 |
4-mercaptobenzoic acid |
C7H6O2S |
Molecular Weight:154.186 Density:1.3±0.1 g/cm3 Boiling Point:314.3±25.0 °C at 760 mmHg Melting Point:215-224 °C(lit.) |
1074-36-8 |
2-metyl-5-chloro-benzothiazole |
C8H6ClNS |
Molecular Weight:183.658 Density:1.4±0.1 g/cm3 Boiling Point:276.8±13.0 °C at 760 mmHg Melting Point:65-70 °C(lit.) |
1006-99-1 |
1,2-Bis(4-nitrophenyl)disulfane |
C12H8N2O4S2 |
Molecular Weight:308.333 Density:1.5±0.1 g/cm3 Boiling Point:478.8±30.0 °C at 760 mmHg Melting Point:141 °C |
100-32-3 |
4-(Methylmercapto)aniline |
C7H9NS |
Molecular Weight:139.218 Density:1.1±0.1 g/cm3 Boiling Point:273.3±13.0 °C at 760 mmHg Melting Point:156 - 158ºC |
104-96-1 |
4-Bromothioanisole |
C7H7BrS |
Molecular Weight:203.100 Density:1.5±0.1 g/cm3 Boiling Point:242.1±23.0 °C at 760 mmHg Melting Point:38-40 °C(lit.) |
104-95-0 |
Phenyl thioacetic acid |
C8H8O2S |
Molecular Weight:168.213 Density:1.3±0.1 g/cm3 Boiling Point:314.4±25.0 °C at 760 mmHg Melting Point:60-63 °C(lit.) |
103-04-8 |
4-acetamidothiophenol |
C8H9NOS |
Molecular Weight:167.228 Density:1.2±0.1 g/cm3 Boiling Point:367.1±25.0 °C at 760 mmHg Melting Point:150-153 °C(lit.) |
1126-81-4 |
o-nitrophenyl disulfide |
C12H8N2O4S2 |
Molecular Weight:308.333 Density:1.5±0.1 g/cm3 Boiling Point:441.9±30.0 °C at 760 mmHg Melting Point:194-197 °C(lit.) |
1155-00-6 |
2,2'-Disulfanediyldianiline |
C12H12N2S2 |
Molecular Weight:248.367 Density:1.3±0.1 g/cm3 Boiling Point:398.0±27.0 °C at 760 mmHg Melting Point:91-92 °C(lit.) |
1141-88-4 |
2-Aminodiphenyl sulfide |
C12H11NS |
Molecular Weight:201.287 Density:1.2±0.1 g/cm3 Boiling Point:330.5±25.0 °C at 760 mmHg Melting Point:43 °C(lit.) |
1134-94-7 |
1-(Hydroxymethyl)-5,5-dimethylhydantoin |
C6H10N2O3 |
Molecular Weight:158.15500 Density:1.257 g/cm3 Boiling Point:N/A Melting Point:104-106°C |
116-25-6 |
bis(4-chlorophenyl) disulfide |
C12H8Cl2S2 |
Molecular Weight:287.228 Density:1.4±0.1 g/cm3 Boiling Point:373.2±27.0 °C at 760 mmHg Melting Point:71-74 °C(lit.) |
1142-19-4 |
3-(Bromomethyl)-5-chlorobenzo[b]thiophene |
C9H6BrClS |
Molecular Weight:261.566 Density:1.7±0.1 g/cm3 Boiling Point:345.5±27.0 °C at 760 mmHg Melting Point:129 °C |
1198-51-2 |
Pyrazolanthrone (SP600125) |
C14H8N2O |
Molecular Weight:220.226 Density:1.5±0.1 g/cm3 Boiling Point:489.3±14.0 °C at 760 mmHg Melting Point:281~282℃ |
129-56-6 |
4-Methylthio benzoic acid |
C8H8O2S |
Molecular Weight:168.213 Density:1.3±0.1 g/cm3 Boiling Point:319.0±25.0 °C at 760 mmHg Melting Point:192-196 °C(lit.) |
13205-48-6 |
4-Chlorophenyl methyl sulfide |
C7H7ClS |
Molecular Weight:158.648 Density:1.2±0.1 g/cm3 Boiling Point:222.4±23.0 °C at 760 mmHg Melting Point:N/A |
123-09-1 |
Bis(2-fluorophenyl) disulfide |
C12H8F2S2 |
Molecular Weight:254.319 Density:1.4±0.1 g/cm3 Boiling Point:292.2±25.0 °C at 760 mmHg Melting Point:N/A |
14135-38-7 |
Bis-3,5-Dichlorophenyl disulfide |
C12H6Cl4S2 |
Molecular Weight:356.118 Density:1.6±0.1 g/cm3 Boiling Point:429.7±45.0 °C at 760 mmHg Melting Point:66-69 °C(lit.) |
137897-99-5 |
2-Methyl diphenyl sulfide |
C13H12S |
Molecular Weight:200.299 Density:1.1±0.1 g/cm3 Boiling Point:289.4±9.0 °C at 760 mmHg Melting Point:N/A |
13963-35-4 |
Cyclopropanesulfonyl chloride |
C3H5ClO2S |
Molecular Weight:140.59 Density:1.5±0.1 g/cm3 Boiling Point:198.5±7.0 °C at 760 mmHg Melting Point:N/A |
139631-62-2 |
3-Phenyl-2-propyn-1-ol |
C9H8O |
Molecular Weight:132.159 Density:1.1±0.1 g/cm3 Boiling Point:241.8±23.0 °C at 760 mmHg Melting Point:N/A |
1504-58-1 |
4-Methylbenzhydrol |
C14H14O |
Molecular Weight:198.26000 Density:1.081 g/cm3 Boiling Point:N/A Melting Point:50-54 °C(lit.) |
1517-63-1 |
Phenyl tribromomethyl sulfone |
C7H5Br3O2S |
Molecular Weight:392.890 Density:2.3±0.1 g/cm3 Boiling Point:373.8±42.0 °C at 760 mmHg Melting Point:145-147 °C(lit.) |
17025-47-7 |
3-Chlorothiophene |
C4H3ClS |
Molecular Weight:118.585 Density:1.3±0.1 g/cm3 Boiling Point:133.9±13.0 °C at 760 mmHg Melting Point:N/A |
17249-80-8 |
2,3-Dichlorobenzenethiol |
C6H4Cl2S |
Molecular Weight:179.067 Density:1.4±0.1 g/cm3 Boiling Point:249.3±20.0 °C at 760 mmHg Melting Point:54.4-60.1 °C |
17231-95-7 |
3,5-Dichlorobenzenethiol |
C6H4Cl2S |
Molecular Weight:179.067 Density:1.4±0.1 g/cm3 Boiling Point:247.1±20.0 °C at 760 mmHg Melting Point:62-65 °C(lit.) |
17231-94-6 |
2-Chlorothiosanisole |
C7H7ClS |
Molecular Weight:158.648 Density:1.2±0.1 g/cm3 Boiling Point:211.1±23.0 °C at 760 mmHg Melting Point:N/A |
17733-22-1 |
4-Nitrothiophenol |
C6H5NO2S |
Molecular Weight:155.174 Density:1.4±0.1 g/cm3 Boiling Point:281.9±23.0 °C at 760 mmHg Melting Point:72-77 °C(lit.) |
1849-36-1 |
Phenylthioethene |
C8H8S |
Molecular Weight:136.214 Density:1.0±0.1 g/cm3 Boiling Point:199.1±13.0 °C at 760 mmHg Melting Point:N/A |
1822-73-7 |
o-Bromo(methylthio)benzene |
C7H7BrS |
Molecular Weight:203.100 Density:1.5±0.1 g/cm3 Boiling Point:258.8±0.0 °C at 760 mmHg Melting Point:-24 °C |
19614-16-5 |
3,4-Dimethylbenzenethiol |
C8H10S |
Molecular Weight:138.230 Density:1.0±0.1 g/cm3 Boiling Point:222.1±9.0 °C at 760 mmHg Melting Point:N/A |
18800-53-8 |
2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide |
C14H14O2P2S4 |
Molecular Weight:404.467 Density:1.5±0.1 g/cm3 Boiling Point:525.8±60.0 °C at 760 mmHg Melting Point:228-230 °C(lit.) |
19172-47-5 |