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Synthesis and Characterization of 2-Methoxy-6-Phenyl-5h-pyrrolo[3,4-b]pyrazine-5,7(6h)-Dione and 7-Hydroxy-3-Methoxy-6-Phenyl-6,7-Dihydro-5h-pyrrolo[3,4-b]pyrazine-5-One and Some Derivatives. Int J of Pharm Chem 2017, 7 (8), 121-130. https://doi.org/10.7439/ijpc.v7i8.4267.