Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Cyclopentanohydrophenanthrene ring system doai
Inventor
active
14-.alpha., 17-.alpha.-C.sub.2 bridged norprogesterone derivativ
14-.alpha.,17-.alpha.-C.sub.2 -bridged norprogesterone derivativ
14.alpha., 16.alpha.-ethanoand 14.alpha., 16.alpha.-etheno-estra
14.alpha., 17.alpha.-C.sub.2 -bridged norprogesterone derivative
14.alpha.17.alpha.-(Propano-and 17.sup.2 propeno) -estratrienes
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