Auristatin F-d8 is deuterium labeled Auristatin F (HY-15583). Auristatin F is a potent cytotoxin in antibo-conjugated agents and an analogue of MMAF. Auristatin F is a potent microtubule inhibitor and vascular damaging agent (VDA). Auristatin F inhibits cell division by preventing tubulin aggregation.Auristatin F can be used in antibody-drug conjugates (ADC) .