(2R,3R)-1-(tert-butoxycarbonyl)-3-hydroxypyrrolidine-2-carboxylic acid is a chiral, non-proteinogenic amino acid derivative featuring a pyrrolidine ring system. It contains both a carboxylic acid and a secondary alcohol functional group, with the amino group protected by a tert-butoxycarbonyl (Boc) group. This specific stereochemistry ((2R,3R)) is crucial for its biological activity and synthetic utility. This compound serves as a key chiral building block in pharmaceutical research and development. Its primary application is as a versatile intermediate in the synthesis of complex drug molecules, particularly those targeting the central nervous system and as enzyme inhibitors. The hydroxylated proline scaffold is a privileged structure found in several bioactive compounds and peptidomimetics. The Boc-protected amine and free carboxylic acid allow for selective coupling reactions, making it a valuable fragment for constructing larger, more complex molecular architectures in medicinal chemistry. The compound is commercially available from suppliers specializing in fine chemicals and advanced pharmaceutical intermediates. It is typically handled under standard laboratory conditions, and its stability is enhanced by the Boc protecting group.