1H-Purine-2,6-dione, 2,3,6,7-tetrahydro-1,3-dimethyl-8-(1-naphthalenylmethyl)- 2,3,6,7-Tetrahydro-1,3-dimethyl-8-(1-naphthalenylmethyl)-1H-purine-2,6-dione Theophylline, 8-(1-naphthylmethyl)- UO8445500