61046-49-9 9.alpha.-Fluoro-11.beta.-hydroxy-2.alpha.-methylprogesterone NSC21636 Pregn-4-ene-3,20-dione, 9-fluoro-11-hydroxy-2-methyl-, (2.alpha.,11.beta.)- Progesterone, 9-fluoro-11.beta.-hydroxy-2.alpha.-methyl-