138525-71-0 5(6)-1(2H)-Phthalazinonyl-4(1H)-benzimidazole-2-carbamate methyl ester 5-Pbic Carbamic acid, (5-(3,4-dihydro-4-oxo-1-phtalazinyl)-1H-benzimidazol-2-yl)-, methyl ester Methyl (5-(3,4-dihydro-4-oxo-1-phtalazinyl)-1H-benzimidazol-2-yl)carbamate