(1,2,4)Triazino(3,4-f)purine-6,8(7H,9H)-dione, 1,4-dihydro-3-(4-ethylphenyl)-9-methyl- (1,2,4)Triazino(3,4-f)purine-6,8(7H,9H)-dione, 1,4-dihydro-3-(p-ethylphenyl)-9-methyl- 1,4-Dihydro-3-(p-ethylphenyl)-9-methyl-(1,2,4)triazino(3,4-f)purine-6,8(7H,9H)-dione 106087-38-1