| post date: | dec 08,2021 |
| expiry date: | dec 08,2022 |
| detailed description: | cas no. :52-76-6 api |
| cas registry number: | 52-76-6 |
| synonyms: | ;19-nor-17-alpha-pregn-4-en-20-yn-17-beta-ol;(17beta)-17-ethynylestr-4-en-17-ol;(17alpha)-17-ethynylestr-4-en-17-ol; |
| molecular formula: | c20h28o |
| molecular weight: | 284.4357 |
| molecular structure: | 
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