337-03-1 9-Fluoro-11.beta.,17-dihydroxyprogesterone Flugestona Flugestone Flugestonum NSC79327 Pregn-4-ene-3,20-dione, 9-fluoro-11,17-dihydroxy-, (11.beta.)- Pregn-4-ene-3,20-dione, 9-fluoro-11.beta.,17-dihydroxy-