4-(3-Tosyl-2-(tosylmethyl)propanoyl)benzoic acid-glu(PEG24-Me)-val-cit-NH-benzyloxyformic acid-MMAE

4-(3-Tosyl-2-(tosylmethyl)propanoyl)benzoic acid-glu(PEG24-Me)-val-cit-NH-benzyloxyformic acid-MMAE is a dr_ug-linker conjugate for ADC. 4-(3-Tosyl-2-(tosylmethyl)propanoyl)benzoic acid-glu(PEG24-Me)-val-cit-NH-benzyloxyformic acid-MMAE contains a linker and bioactive small molecule toxins MMAE (HY-15162). 4-(3-Tosyl-2-(tosylmethyl)propanoyl)benzoic acid-glu(PEG24-Me)-val-cit-NH-benzyloxyformic acid-MMAE can conjugate with NN2101 (HY-P991293) (anti c-Kit) for synthesizing NN3201. NN3201 rapidly internalizes and inhibits SCF-driven signaling, thereby delivering its payload to induce cell cycle arrest and apoptosis. NN3201 exhibits significant c-Kit-dependent anti-tumor efficacies in various tumor models, such as small cell lung cancer (SCLC) and gastrointestinal stromal tumor (GIST).