D-Alaninamide is a non-proteinogenic amino acid derivative, specifically the amide form of D-alanine. It is a chiral building block with the molecular formula C3H8N2O and a molecular weight of 88.11 g/mol. Its CAS registry number is 35320-22-0. This compound serves as a crucial chiral intermediate in the synthesis of various bioactive molecules. Its primary application is in pharmaceutical research and development, particularly for the synthesis of peptides and peptidomimetics. It is used in the preparation of enzyme inhibitors and other compounds where the D-configuration of the amino acid is essential for biological activity or metabolic stability. As a protected form of D-alanine, D-alaninamide is a valuable synthon in organic and medicinal chemistry. It is commonly employed in solid-phase peptide synthesis (SPPS) and other coupling reactions to introduce the D-alanine residue into target sequences. Its stability and reactivity make it a standard reagent for constructing complex molecular architectures in drug discovery.