3,20-Allopregnanedione 3,20-Dioxo-5.alpha.-pregnane 5.alpha.-Dihydroprogesterone 5.alpha.-Pregnane-3,20-dione 5.beta.-Pregnane-3,20-dione 566-65-4 NSC18319 Pregnane-3,20-dione, (5.alpha.)- WLN: L E5 B666 OVTJ A1 E1 FV1