Used as a protecting group for the pyrazole nitrogen in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. The tert-butoxycarbonyl (Boc) group stabilizes the pyrazole ring during multi-step reactions, allowing selective functionalization at other sites. After the desired transformations, the protecting group is easily removed under mild acidic conditions, regenerating the free pyrazole without degrading the core structure. This makes it valuable in the synthesis of bioactive molecules where pyrazole is a key heterocyclic component.