N-Formyl-Met-Leu-Phe-Lys from MedChemExpress

N-Formyl-Met-Leu-Phe-Lys (fMLFK) is a peptide, acts as a potent and selective agonist of FPR1, with EC50s of 3.5 nM, 6.7 µM and 0.88 µM for FPR1, FPR2 and FPR2-D2817.32G, respectively[1]