Notes: Uridine-5'-monophosphate is a ribonucleotide.{48688} It is formed via decarboxylation of orotidine-5'-monophosphate (5'-OMP) by OMP decarboxylase. Uridine-5’-monophosphate is further phosphorylated by uridine-5’-monophosphate-CMP kinase to form UDP (Item No. 18137) and UTP (Item No. 9003530) during nucleic acid biosynthesis. Formulations containing uridine-5’-monophosphate have been used as dietary supplements.