Exemestane - 6-Methylideneandrosta-1,4-diene-3,17-dione ; Androsta-1,4-diene-3,17-dione, 6-methylene; 6-Methyleneandrosta-1,4-diene-3,17-dione :
Exemestane EP Impurity - I - 6-methylidene-3-oxoandrosta-1,4-dien-17beta-yl formate ; (10R,13S,17S)-10,13-dimethyl-6-methylene-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl formate;