2890-11-1 7-Dimethylaminonaphthalene-1,2-dicarbonic acid hydrazide 7-Dimethylaminonaphthalin-1,2-dicarbonic acid hydrazide 7-Dman Benzo(f)phthalazine-1,4-dione, 9-(dimethylamino)-2,3-dihydro- DMNH