2-(3,4-Dihydro-3,4-dioxo-4-naphthalenyl)-N-methylhydrazinecarboxamide 4-(4-Methylsemicarbazido)-1,2-naphthoquinone 77065-59-9 Hydrazinecarboxamide, 2-(3,4-dihydro-3,4-dioxo-4-naphthalenyl)-N-methyl- Semicarbazide, 1-(3,4-dihydro-3,4-dioxo-4-naphthyl)-4-methyl-