Gemcitabine triphosphate (dFdCTP), alongside its counterpart, the active diphosphate (dFdCDP), represents one of the two primary nucleoside metabolites of Gemcitabine within cellular structures. It serves as a benchmark in radiolabeled probe imaging investigations aimed at pinpointing tumors responsive to Gemcitabine. Furthermore, it is instrumental in assessing the compound's absorption and retention by cells [1] [2].