19-NORANDROSTENEDIONE
19-Nor-4-androstene-3,17-dione
CAS: 734-32-7
Molecular Formula: C18H24O2
19-NORANDROSTENEDIONE - Names and Identifiers
| Name | 19-Nor-4-androstene-3,17-dione |
| Synonyms | Estrenone Norandrostenedione Nor-Androstenedione 19-NORANDROSTENDIONE estr-4-ene-3,17-dione 19-NORANDROSTENEDIONE 19-NOR-4-ANDROSTENEDIONE Norethisterone Impurity B 19-NORANDROSTENE-3,17-DIONE 19-Nor-4-androstene-3,17-dione 19-NORANDROST-4-ENE-3,17-DIONE (8xi,9xi,10xi,14xi)-estr-4-ene-3,17-dione (8R,9S,10R,13S,14S)-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione (8R,9S,10R,13S,14S)-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-quinone (8R,9S,10R,13S,14S)-13-methyl-7,8,9,10,11,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17(2H,6H)-dione* |
| CAS | 734-32-7 |
| EINECS | 211-995-8 |
| InChI | InChI=1/C18H24O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h10,13-16H,2-9H2,1H3/t13?,14?,15?,16?,18-/m0/s1 |
19-NORANDROSTENEDIONE - Physico-chemical Properties
| Molecular Formula | C18H24O2 |
| Molar Mass | 272.38 |
| Density | 1.13±0.1 g/cm3(Predicted) |
| Melting Point | 169-172°C |
| Boling Point | 433.4±45.0 °C(Predicted) |
| Specific Rotation(α) | +134～+143°(D/25℃)(c=0.5,C2H5OH) |
| Flash Point | 161.831°C |
| Water Solubility | 191mg/L at 20℃ |
| Vapor Presure | 0.001Pa at 25℃ |
| Storage Condition | Refrigerator |
| Refractive Index | 1.556 |
| Physical and Chemical Properties | Plate-like crystals (acetone/hexane). Melting point 33-174 °c,[α]25/D 139.5 °(C 0.95, chloroform). There are a variety of isomers. Type 9β: CAS accession number [6827-75-4], Crystal (ethanol/hexane), melting point 174-176 ℃; Type 9β: 10α: CAS accession number [2645-92-3], needle Crystal (acetone/diisopropyl ether), melting point 135 ℃,[α]25/D-23.9 °(C1.055, chloroform); Type 10α: CAS accession number [5696-23-1], crystalline (ethanol/hexane), melting point 164 ℃; Type 13α: CAS accession number [17131-67-8], crystalline (methanol), melting point 160-162 ℃,[α] D-45 ° (chloroform);8 α,9 β,10 α,14 β type: CAS accession number [17131-68-9], crystalline (ethanol), melting point 160-161 °c,[α] D 44 ° (chloroform),(13α)-enantiomer;(±)-Type: CAS accession number [5972-59-8], Crystal (methanol solution), melting point 157-159.5 °c;(±)-9β,10α type: CAS accession number [5972-65-6], prism Crystal (dichloromethane/ether), melting point 150-152 ℃,159-162 ℃ (Double melting point). |
19-NORANDROSTENEDIONE - Risk and Safety
| Risk Codes | R11 - Highly Flammable R34 - Causes burns |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| WGK Germany | 3 |
| HS Code | 29372900 |
19-NORANDROSTENEDIONE - Reference Information
| LogP | 2.18 at 25℃ |
| Use | an intermediate of norethisterone, testosterone propionate, and nolone phenylpropionate. |
| production method | The androstin-4-en-19-methanol -3, the 17-Dione is oxidized by chromic anhydride-concentrated sulfuric acid to produce thien-4-en-19-carboxy -3,17-Dione, the latter was decarboxylated by heating in pyridine under nitrogen. |
Last Update：2024-04-09 15:16:52
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