Terbinafine hydrochloride is a synthetic allylamine antifungal compound
Chemically, terbinafine hydrochloride is (E)-N-(6,6-dimethyl-2-hepten-4-ynyl)-N-methyl-1- naphthalenemethanamine hydrochloride. The empirical formula C21H26CIN with a molecular weight of 327.90

Terbinafine hydrochloride is a white to off- white fine crystalline powder. It is freely soluble in methanol and methylene chloride, soluble in ethanol, and slightly soluble in water.