Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of fluorinated active pharmaceutical ingredients (APIs). Its structure supports enhanced metabolic stability and bioavailability in drug candidates. Commonly employed in the preparation of kinase inhibitors and central nervous system agents due to the favorable pharmacokinetic properties imparted by the difluorophenyl and chiral amine moieties. The hydrochloride salt form improves solubility and crystallinity, facilitating handling and formulation in early-stage drug development.