Fig. 2From: Recent advances in modified poly (lactic acid) as tissue engineering materialsStructure of lactic acid. (a) The chemical structure of lactic acid (C3H6O3), the IUPAC name is 2 – Hydroxypropanoic acid. (b) Isomeric structure of lactic acid, (R) or L (+) Lactic acid. (c) Isomeric structure of lactic acid, (S) or D (-) Lactic acidBack to article page