1,2-Benzenedicarboxylic acid, 3-amino-, cyclic hydrazide 1,4-Phthalazinedione, 5-amino-2,3-dihydro- 3-Aminophthalhydrazide 3-Aminophthalic acid hydrazide 3-Aminophthalic hydrazide 521-31-3 Luminol NSC5064