AROMASIN® Tablets for oral administration contain 25 mg
of exemestane, an irreversible, steroidal aromatase inactivator.
Exemestane is chemically described as
6-methylenandrosta-1,4-diene-3,17-dione. Its molecular formula is
C20H24O2 and its structural formula
is as follows:
The active ingredient is a white to slightly yellow crystalline
powder with a molecular weight of 296.41. Exemestane is freely
soluble in N, N-dimethylformamide, soluble in methanol, and
practically insoluble in water.
Each AROMASIN Tablet contains the following inactive ingredients:
mannitol, crospovidone, polysorbate 80, hypromellose, colloidal
silicon dioxide, microcrystalline cellulose, sodium starch glycolate,
magnesium stearate, simethicone, polyethylene glycol 6000, sucrose,
magnesium carbonate, titanium dioxide, methylparaben, and polyvinyl
alcohol.