1,1'-Dimethylbiguamide theophylline-7-acetate 55912-09-9 7H-Purine-7-acetic acid, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-, compd. with N,N-dimethylimidodicarbonimidic diamide (1:1) Theophyllineethanoate-7 de dimethyl-1,1'-biguanide [French]