(S)-Tetrahydro-2H-pyran-3-amine hydrochloride is primarily used as a chiral building block in the synthesis of various pharmaceuticals. Its stereochemistry makes it valuable in the development of enantiomerically pure drugs, particularly in the creation of active pharmaceutical ingredients (APIs) where specific chirality is crucial for efficacy and safety. This compound is often employed in the preparation of antiviral and antibacterial agents, where its structure serves as a key intermediate. It is also utilized in the synthesis of compounds targeting central nervous system disorders, such as antidepressants and anxiolytics, due to its ability to interact with specific biological targets. Additionally, (S)-Tetrahydro-2H-pyran-3-amine hydrochloride finds application in organic synthesis as a reagent for asymmetric synthesis, enabling the production of complex molecules with high enantiomeric purity. Its versatility and chiral properties make it a valuable tool in medicinal chemistry and drug discovery.