Cytidine-5′-triphosphate-d14 (disodium) is the deuterium labeled Cytidine-5'-triphosphate. Cytidine 5′-triphosphate (Cytidine triphosphate;5'-CTP) is a nucleoside triphosphate and serves as a building block for nucleotides and nucleic acids, lipid biosynthesis. Cytidine triphosphate synthase can catalyze the formation of cytidine 5′-triphosphate from uridine 5′-triphosphate (UTP). Cytidine 5′-triphosphate is an essential biomolecule in the de novo pyrimidine biosynthetic pathway in T. gondii.