64487-94-1;N-[2-(Diphenylmethoxy)ethyl]-2,3,6,7-tetrahydro-N,N,1,3-tetramethyl-2,6-dioxo-1H-purin-8-aminium Inner Salt;8-[2-benzhydryloxyethyl(dimethyl)azaniumyl]-1,3-dimethyl-2-oxopurin-6-olate;8-[N-(2-Diphenylmethoxyethyl)-N,N-dimethylaminium]-1,3-dimethylxanthine inner salt