POT-4 (AL-78898A), a Compstatin derivative, is a potent inhibitor of complement factor C3 activation. POT-4 can be used for age-related macular degeneration research In Vitro A derivative of compstatin, a potent C3 inhibitor, POT-4 is a cyclic peptide that exhibits binding activity to C3, preventing cleavage to its active fragments C3a and C3b. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid