Zoledronic acid-15N2,13C2 (CGP 42446-15N2,13C2) is the 13C- and 15N-labeled Zoledronic Acid (HY-13777). Zoledronic Acid (Zoledronate) is a third-generation bisphosphonate (BP), with potent anti-resorptive activity. Zoledronic Acid inhibits the differentiation and apoptosis of osteoclasts. Zoledronic Acid also has anti-cancer effects[1].