FIELD: chemical industry. SUBSTANCE: described is method of preparing enantiomerically pure azetidine-2-carboxylic acid (AzeOH) by dissolving racemic mixture AzeOH and L or D-tartaric acid in solvents to form homogeneous solution, selective crystallization of the resulting pure AzeOH tartrate from solution followed by isolation of pure amino acid. Also described are new L-azetidine-2-carboxylic acid D-tartrate and D-azetidine-2-carboxylic acid L-tartrate. EFFECT: product with higher yield and greater optical purity by method using less stages. 16 cl, 11 ex
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