(S)-2-(Cbz-amino)-4-Methylhomophenylalanine is a chiral amino acid derivative used in peptide synthesis. The (S) denotes the specific stereochemistry at the chiral center of the molecule. The Cbz (carbobenzyloxy) group is a protective group attached to the amino group, preventing it from reacting prematurely during synthesis. The 4-Methylhomophenylalanine component features a homophenylalanine backbone with a methyl group added at the 4-position, providing additional hydrophobicity and altering the molecule's steric properties. This compound is employed to introduce specific structural features into peptides, potentially influencing their biological activity, stability, or interaction with other molecules.