Tert-butyl 6-hydroxyhexanoate is primarily used in organic synthesis as an intermediate for the production of more complex chemical compounds. Its hydroxyl and ester functional groups make it a versatile building block in the synthesis of pharmaceuticals, agrochemicals, and specialty chemicals. It is particularly valuable in the preparation of polymers and resins, where it can act as a monomer or a modifier to enhance material properties. Additionally, it finds application in the development of fine chemicals and active pharmaceutical ingredients (APIs), where its structure can be tailored to introduce specific functionalities. Its stability and reactivity under controlled conditions make it a useful reagent in research and industrial processes.