cl2 sn 38

CL2-SN-38, a part of the antibody-drug conjugate (ADC), can conjugate with the anti-Trop-2-humanized antibody hRS7. SN-38 is an inhibitor of DNA topoisomerase I.

CL2 Linker is a cleavableADC linker. CL2-SN-38 and CL2A-SN-38 are equivalent in drug substitution (~6), cell binding (Kd ~1.2 nM), cytotoxicity (IC50 ~2.2 nM), and serum stability in vitro (t1 2 ~20 hours)[1][2].

CL2-MMT-SN38 is a derivative of SN-38, which is a potent anticancer agent and the active metabolite of Irinotecan (CPT-11), a Topoisomerase I inhibitor.