1,3-diphenyl-5-(2-methyl-4-chloro-1,2-dihydro-1-phthalazinylidene)formazan EE'E'' form

4-氯-1(2H)-酞嗪酮

硫酸二甲酯

2-phenyl-4-(2-methyl-4-chloro-1,2-dihydro-1-phthalazinylidene)benzohydrazidine

2-methyl-4-chloro-1-phthalazinone hydrazone