A novel substituted estrogen as aromatase inhibitor.Alternate Name:19-Hydroxyandrost-4-ene-3,17-dione; Androst-4-en-19-ol-3,17-dione; Androst-4-ene-3,17-dione-19-olCAS Number:510-64-5Molecular Formula:C19H26O3Molecular Weight:302.41Form:Off-White to Pale Yellow SolidMelting Point:166.5-167.5˚CSolubility:Chloroform, Methanol