8-((2-Dimethylaminoethyl)amino)caffeine methiodide Ammonium, (2-(2,4-dioxo-1,3,7-trimethyl-1,2,3,6-tetrahydropurin-8-yl)ethyl)trimethyl-, iodide BQ2702020 Caffeine, 8-((2-dimethylaminoethyl)amino)-, methiodide