Used as a key intermediate in organic synthesis, particularly in the preparation of complex natural products and pharmaceuticals. Its alkyne functionality allows for participation in click chemistry reactions, such as copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in drug discovery and bioconjugation. The tetrahydropyranyl group acts as a protecting group for alcohols, enabling selective protection and deprotection during multi-step syntheses. Its stability under various reaction conditions enhances its utility in building molecular complexity.