This is a Boc-protected derivative of 4-(aminocarbonyl)-2,6-dimethyl-L-phenylalanine, a modified unnatural amino acid used in peptide synthesis. The tert-butoxycarbonyl (Boc) group protects the alpha-amino functionality, enabling selective coupling via the free carboxylic acid during peptide chain assembly and preventing unwanted side reactions. It is particularly valuable in solid-phase peptide synthesis (SPPS), where orthogonal deprotection of the Boc group facilitates controlled elongation of the peptide chain. The compound's unique structure, including the 2,6-dimethyl and 4-carbamoyl substituents on the phenyl ring, imparts steric and electronic properties ideal for synthesizing complex peptides with high precision and specificity. It is widely employed in pharmaceutical research and development, especially for producing peptide-based therapeutics where such protected building blocks are essential for achieving desired molecular architectures, stability, and biological activity.