Floxuridine-13C,15N2 (5-Fluorouracil 2-deoxyriboside-13C,15N2) is the 13C- and 15N-labeled labeled Floxuridine (HY-B0097). Floxuridine (5-Fluorouracil 2-deoxyriboside) is a pyrimidine analog and known as an oncology antimetabolite. Floxuridine inhibits Poly(ADP-Ribose) polymerase and induces DNA damage by activating the ATM and ATR checkpoint signaling pathways in vitro. Floxuridine is a extreamly potent inhibitor for S. aureus infection and induces cell apoptosis[1][2]. Floxuridine has antiviral effects against HSV and CMV[3].