Zinc Malate is a zinc salt of DL-Malic Acid (DL-Malic Acid). DL-Malic Acid is a selective α-amino protecting reagent for amino acid derivatives. A versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D3 analogue, and phoslactomycin B.