Process for preparing 9.alpha.-hydroxy-4-androstene-3,17-dione
US4237220A · kind A · utility
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1Claims
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Key dates
| Filing date | Nov 19, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Nov 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/911
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A high yield process for preparing 9.alpha.-hydroxy-4-androstene-3,17-dione comprises fermenting 4-androstene-3,17-dione with a culture of Corynespora cassicola ATCC 16,718.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.