Boc-Hyp-OH is the N-(tert-butoxycarbonyl)-protected form of L-hydroxyproline, a key building block in peptide synthesis. The Boc group protects the amino group of hydroxyproline, enabling selective activation and coupling of the carboxylic acid during peptide bond formation. This is essential for the synthesis of complex peptides and proteins, where precise control over amino acid reactivity is required. It is widely used in pharmaceutical development, particularly for peptide-based drugs, to maintain the structural integrity and bioactivity of the peptide chain. Additionally, it supports research in biochemistry and molecular biology, facilitating studies on peptide interactions, collagen structure, and related biological properties.