Allylamines are a class of organic compounds characterized by the presence of an allyl group, which is a three-carbon chain with a double bond. They are primarily used in the pharmaceutical industry, particularly in the treatment of fungal infections. One well-known allylamine is terbinafine, which is effective against various dermatophyte fungi. These compounds work by inhibiting the enzyme squalene epoxidase, disrupting the synthesis of ergosterol, an essential component of fungal cell membranes. This mechanism makes allylamines valuable in treating conditions like athlete's foot and ringworm. Their effectiveness and relatively low toxicity contribute to their popularity in antifungal therapies.