Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and bioactive molecules. The aldehyde group allows for various transformations such as reductive amination, Wittig reactions, or nucleophilic additions, enabling the construction of complex structures. The tert-butyloxycarbonyl (Boc) protected amine provides stability and selectivity in multi-step syntheses, especially in peptide chemistry or drug development where controlled deprotection is required. Its bifunctional nature makes it valuable for building blocks in medicinal chemistry.