7-Methylguanosine iodide is an iodide of 7-Methylguanosine (HY-122524). 7-Methylguanosine is a modified nucleoside widely present in various RNAs and a key metabolite of the 5-cap structure of eukaryotic mRNA. 7-Methylguanosine plays important roles in stabilizing RNA structures, regulating translation, and other aspects[1][2].