Terbinafine (Standard) is the standard substance of Terbinafine, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Terbinafine (TDT 067) is a synthetic allylamine derivative with antifungal activity. Terbinafine exerts its effect through inhibition of squalene epoxidase, thereby blocking the biosynthesis of ergosterol, an important component of fungal cell membranes. As a result, this agent disrupts fungal cell membrane synthesis and inhibits fungal growth.