(S)-(−)-α-Methylbenzylamine is widely used as a chiral resolving agent in organic synthesis. It is particularly valuable for separating racemic mixtures of carboxylic acids and other chiral compounds through the formation of diastereomeric salts. This process allows for the isolation of enantiomerically pure substances, which is crucial in the pharmaceutical industry for producing drugs with specific stereochemistry. Additionally, it serves as a chiral building block in the synthesis of various pharmaceuticals, agrochemicals, and fine chemicals. Its application extends to asymmetric synthesis, where it acts as a chiral auxiliary or ligand in catalytic reactions, enhancing enantioselectivity. This compound is also utilized in research and development for studying stereochemical effects and developing new chiral catalysts.