1,2,4-Triazolo(3,4-a)phthalazin-3-amine, 6-phenyl-N-2-propenyl- 1,2,4-Triazolo(3,4-a)phthalazine, 6-phenyl-3-(2-propenylamino)- 6-Phenyl-3-(2-propenylamino)-1,2,4-triazolo(3,4-a)phthalazine 87540-68-9