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N-Formyl-Met-Leu-Phe-Lys (fMLFK) is a peptide that acts as a potent and selective agonist of FPR1, with EC50s of 3.5 nM for FPR1, 6.7 μM for FPR2, and 0.88 μM for FPR2-D2817.32G. This chemotactic peptide binds specifically to receptors on leukocyte membranes and its uptake can contribute to the quantitative assessment of neutrophils in localized inflammatory processes, independent of associated edema formation or microcirculatory compromise.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $48 | In Stock | In Stock | |
| 5 mg | $107 | In Stock | In Stock | |
| 10 mg | $156 | In Stock | In Stock | |
| 25 mg | $258 | In Stock | In Stock | |
| 50 mg | $365 | In Stock | In Stock | |
| 100 mg | $491 | In Stock | In Stock | |
| 200 mg | $662 | In Stock | In Stock |
| Description | N-Formyl-Met-Leu-Phe-Lys (fMLFK) is a peptide that acts as a potent and selective agonist of FPR1, with EC50s of 3.5 nM for FPR1, 6.7 μM for FPR2, and 0.88 μM for FPR2-D2817.32G. This chemotactic peptide binds specifically to receptors on leukocyte membranes and its uptake can contribute to the quantitative assessment of neutrophils in localized inflammatory processes, independent of associated edema formation or microcirculatory compromise. |
| Targets&IC50 | FPR1:3.5 nM (EC50), FPR2:6.7 μM (EC50), FPR2 (D2817.32G):0.88 μM (EC50) |
| Synonyms | fMLFK |
| Molecular Weight | 565.73 |
| Formula | C27H43N5O6S |
| Cas No. | 67247-11-4 |
| Smiles | [C@@H](CC1=CC=CC=C1)(NC([C@@H](NC([C@H](CCSC)NC=O)=O)CC(C)C)=O)C(N[C@@H](CCCCN)C(O)=O)=O |
| Relative Density. | 1.193 g/cm3 (Predicted) |
| Sequence | Formyl-Met-Leu-Phe-Lys |
| Sequence Short | Formyl-MLFK |
| Storage | keep away from moisture | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |
| Solubility Information | H2O: Soluble |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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