Doxofylline Impurity 7 Catalogue D349277 CAS 1429636-74-7 M.W 240.26 M.F C10H16N4O3 Specifications FAQs 1-((1,3-dioxolan-2-yl)methyl)-N-methyl-4-(methylamino)-1H- imidazole-5-carboxamide