1,2,4-Triazolo(3,4-a)phthalazine, 6-(4-methyl-1-piperazinyl)-3-phenyl- 6-(4-Methyl-1-piperazinyl)-3-phenyl-1,2,4-triazolo(3,4-a)phthalazine 87539-99-9 BRN 6438114