1,4-Phthalazinedione, 2,3-dihydro-2-(2-bromophenyl)-, 4-hydrazone 2,3-Dihydro-2-(2-bromophenyl)-1,4-phthalazinedione 4-hydrazone 5-24-07-00565 (Beilstein Handbook Reference) 68763-86-0 BRN 0817683