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Diethyl tartrate is an organic compound, the ethyl ester of tartaric acid. It exists in both as a chiral isomer, showing both left- and right-handed forms, as well as a meso stereoisomer, which is not chiral. The chiral isomer is far more common.
(-)-Diethyl D-tartrate can be used as a starting material in the synthesis of bioactive compounds such as (-)-kumausallene[1], syringolide 2[2] and (+)-exo-brevicomin.[3]