This compound, 4-((tert-butoxycarbonyl)(methyl)amino)butanoic acid, is a Boc-protected derivative utilized in organic synthesis. The tert-butoxycarbonyl (Boc) group protects the secondary amine functionality, enabling selective manipulation of the carboxylic acid. It is especially valuable in peptide synthesis and as a building block for pharmaceutical intermediates, allowing the incorporation of an N-methylated aminobutanoic acid unit while preventing side reactions. Its stability under diverse reaction conditions supports efficient multi-step synthetic routes.