(1,2,4)Triazino(3,4-f)purine-6,8(7H,9H)-dione, 1,4-dihydro-3-ethyl-9-methyl-1-phenyl- 1,4-Dihydro-3-ethyl-9-methyl-1-phenyl-(1,2,4)triazino(3,4-f)purine-6,8(7H,9H)-dione 106087-35-8