Used in organic synthesis as a chiral building block for pharmaceuticals. Its rigid piperidine structure with a defined stereochemistry makes it valuable in the development of bioactive molecules, particularly in the design of central nervous system agents. Commonly employed in medicinal chemistry for structure-activity relationship studies due to the steric and electronic influence of the phenyl and methyl groups. Also serves as a scaffold in asymmetric catalysis and as an intermediate in the preparation of more complex amine-containing compounds.