N2-Methylguanosine-d3 is deuterium labeled N2-Methylguanosine (HY-111647). N2-Methylguanosine is a commonly modified nucleoside in rRNA and tRNA, with specific distributions in both E. coli rRNA and eukaryotic tRNA. N2-Methylguanosine can be found in urine. N2-Methylguanosine affects the structure and stability of RNA[1][2].