180301-43-3 7-(2-(N,N-Diethyldithiocarbamoyl)ethyl)-1,3-dimethylxanthine Carbamodithioic acid, diethyl-, 2-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purin-7-yl)ethyl ester