Uridine triacetate

Formula : C15-H18-N2-O9
CAS : 4105-38-8 

A uridine prodrug that is used in the treatment of hereditary orotic aciduria.

NCI: A synthetic uridine pro-drug that is converted to uridine in vivo. Uridine, a pyrimidine nucleotide, has been used in a variety of diseases including depressive disorders and inherited myopathies. (NCI Thesaurus)

Uridine triphosphate

Formula : C9-H15-N2-O15-P3
CAS : 63-39-8 

Uridine 5'-(tetrahydrogen triphosphate). A uracil nucleotide containing three phosphate groups esterified to the sugar moiety.