1H-Pyrrolo(3,4-d)pyrimidine-5-carboxylic acid, 2,3,4,6-tetrahydro-2,4-dioxo-7-phenyl-, methyl ester 5-Methoxycarbonyl-7-phenyl-6H-pyrrolo(3,4-d)pyrimidin-2(1H),4(3H)-dione 57436-25-6 BRN 0692739