1-Methyladenosine-d3 hydriodide is the deuterium labeled 1-Methyladenosine (HY-113081). 1-Methyladenosine is an RNA modification that can serve as a tumor marker, with elevated levels in the body associated with cancer development. Following 1-methyladenosine methylation, upregulation of PPARdelta expression regulates cholesterol metabolism and activates Hedgehog signaling pathway, driving liver tumorigenesis[1][2][3][4].