N-tert-Butoxycarbonyl-O-tert-butyl-L-tyrosine

N-tert-Butoxycarbonyl-O-tert-butyl-L-tyrosine is used in peptide synthesis as a protecting group for tyrosine residues. The tert-butyl group helps in protecting the hydroxyl group of tyrosine, facilitating the formation of desired peptide bonds needed for pharmacological activities.