1,7-Dimethyl-8-(2-hydroxyethyl)-1H-imidazo(2,1-f)purine-2,4(3H,8H)-dione 1H-Imidazo(2,1-f)purine-2,4(3H,8H)-dione, 1,7-dimethyl-8-(2-hydroxyethyl)- 85592-14-9