Boc-1,2-trans-ACHEC-OH, or N-(tert-butoxycarbonyl)-(1R,2S)-2-aminocyclohexane-1-carboxylic acid, is a Boc-protected amino acid derivative serving as a key building block in peptide synthesis. The Boc (tert-butoxycarbonyl) group protects the amino functionality, enabling selective peptide bond formation and preventing unwanted side reactions, particularly in solid-phase peptide synthesis (SPPS). Its stability under diverse conditions supports precise control in the synthesis of complex organic molecules. Additionally, it is widely used in pharmaceutical and bioactive compound development, contributing to high-purity and high-yield target molecule production.