DM1-(PEG)4-DBCO is a drug-linker conjugate composed of a highly potent microtubulin inhibitor DM1 and a linker DBCO-PEG4-Ahx to make antibody drug conjugate (ADC). Mertansine (DM1) is a microtubulin inhibitor and is an antibody-conjugatable maytansinoid that is developed to overcome systemic toxicity associated with maytansine and to enhance tumor-specific delivery. References:

纯度：≥98%