126650-81-5 4H-(1,2,4)Triazino(3,4-a)phthalazin-4-one, 7-((2-hydroxypropyl)methylamino)-3-(4-methoxyphenyl)- 7-((2-Hydroxypropyl)methylamino)-3-(4-methoxyphenyl)-4H-(1,2,4)triazino(3,4-a)phthalazin-4-one