Used in organic synthesis as an intermediate for pharmaceuticals and fine chemicals, particularly in the development of bioactive molecules and drug candidates. The tert-butyl ester group functions as an effective protecting group for the carboxylic acid, which can be selectively deprotected under mild acidic conditions. Its amino and methoxy functional groups on the benzene ring enable further chemical modifications, making it valuable in constructing complex aromatic and heterocyclic compounds. Commonly employed as a building block in medicinal chemistry research.