This chemical is primarily used in peptide synthesis as a protected form of lysine. The formyl group acts as a protective group for the amino side chain, preventing unwanted reactions during the peptide assembly process. It is particularly useful in solid-phase peptide synthesis (SPPS) where selective deprotection is required to achieve the desired peptide sequence. Additionally, it finds application in biochemical research for studying protein interactions and modifications, as the formyl group can be selectively removed under specific conditions, allowing for controlled manipulation of the lysine residue.