Allylamine hydrochloride is widely used in the synthesis of antifungal agents, particularly in the production of terbinafine, a medication effective against fungal infections like athlete's foot and ringworm. It serves as a key intermediate in pharmaceutical manufacturing, enabling the development of compounds that inhibit fungal growth. Additionally, it is utilized in organic synthesis for creating various allyl derivatives, which are essential in the production of polymers, resins, and other specialty chemicals. Its role in cross-linking reactions also makes it valuable in the formulation of adhesives and coatings.