U 2145 (OTTO) Uridine 5′-monophosphate disodium salt, ≥99% Cas 3387-36-8 - used to study the effect of pyrimidine synthesis inhibitor, 5-azacytidine, on cholesterol and lipid metabolism. U 2145 (OTTO) Uridine 5′-monophosphate disodium salt, ≥99% Cas 3387-36-8 - used to study the effect of nucleotides on growth of specific intestinal bacteria.