1,3-Dimethyl-9-(phenylmethyl)pyrimido(2,1-f)purine-2,4,8(1H,3H,9H)-trione 120538-01-4 Pyrimido(2,1-f)purine-2,4,8(1H,3H,9H)-trione, 1,3-dimethyl-9-(phenylmethyl)-