1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-, compd. with 3-(2-methoxyphenoxy)-1,2-propanediol (1:1) 5634-38-8 EINECS 227-078-0 Guaifilina [INN-Spanish] Guaifylline Guaifyllinum [INN-Latin] Guaithylline Guaithylline [USAN] Theophylline compound with 3-(o-methoxyphenoxy)-1,2-propanediol