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. International Journal of Pharmaceutical Chemistry, [S. l.], v. 7, n. 8, p. 121–130, 2017. DOI: 10.7439/ijpc.v7i8.4267. Disponível em: https://ssjournals.co.in/index.php/ijpc/article/view/4267. Acesso em: 6 jan. 2026.