1,4-Abp 1,4-Bis(butylamino)-benzo(g)phthalazine 1,4-Bis(butylamino)benzo(g)phthalazine 133825-72-6 Benzo(g)phthalazine-1,4-diamine, N,N'-dibutyl- N,N'-Dibutylbenzo(g)phthalazine-1,4-diamine