This compound, 1-(tert-Butoxycarbonyl)-3-hydroxypiperidine-4-carboxylic acid, is a protected piperidine derivative used as a key intermediate in pharmaceutical synthesis. The tert-butoxycarbonyl (Boc) group protects the piperidine nitrogen, enabling selective functionalization of the 3-hydroxy and 4-carboxylic acid groups. It is particularly valuable in the development of active pharmaceutical ingredients (APIs) for neurological and cardiovascular drugs, where piperidine scaffolds are common. Its structure supports further modifications in medicinal chemistry to create complex, biologically active molecules. Additionally, it serves as a building block for incorporating substituted piperidine units into peptides and other therapeutics, facilitating controlled synthesis through orthogonal protection strategies.