Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the production of protease inhibitors such as HIV-1 protease inhibitors. Its rigid indane structure and defined stereochemistry make it ideal for asymmetric synthesis, where it helps control the spatial arrangement of atoms in drug molecules. Commonly employed in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Also utilized in the preparation of catalysts for enantioselective reactions. Its amine group allows for easy incorporation into larger molecular frameworks through amide or sulfonamide bond formation.