(1S,9R)-Exatecan mesylate from MedChemExpress

(1S,9R)-Exatecan mesylate ((1S,9R)-DX8951f) is an isomer of Exatecan mesylate (HY-13631A). Exatecan mesylate (DX8951f) is an inhibitor of DNA topoisomerase I with an IC50 of 2.2 µM (0.975 µg/mL) and can be used in cancer research[1]