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Ac-VLPE-FMK, a tetrapeptidyl mono-fluoromethyl ketone (m-FMK), inhibits Cathepsin B (Cat-B) and Cathepsin L (Cat-L) and is used in cancer aggressiveness research [1] [2].

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 5 mg | Inquiry | Inquiry | Inquiry | |
| 50 mg | Inquiry | Inquiry | Inquiry |
| Description | Ac-VLPE-FMK, a tetrapeptidyl mono-fluoromethyl ketone (m-FMK), inhibits Cathepsin B (Cat-B) and Cathepsin L (Cat-L) and is used in cancer aggressiveness research [1] [2]. |
| In vitro | Ac-VLPE-FMK (2 μM) significantly affects the cleavage of the probe Ac-PLVQ-AMC by recombinant human CtsB and L [1], while inhibiting fluorescence from substrate cleavage in 769-p and A498 cells after 30 minutes [1]. Although Ac-VLPE-FMK (2.5-250 μM; 24-72 h) does not affect renal cancer cell viability, it alters cell migration rate, adhesion, colony formation, and marker expression [1]. |
| Synonyms | Ac-Val-Leu-Pro-Glu(OMe)-CH2F |
| Molecular Weight | 528.61 |
| Formula | C25H41FN4O7 |
| Cas No. | 2679825-27-3 |
| Smiles | C([C@@H](NC([C@@H](NC(C)=O)[C@@H](C)C)=O)CC(C)C)(=O)N1[C@H](C(N[C@@H](CCC(OC)=O)C(CF)=O)=O)CCC1 |
| Sequence | Ac-Val-Leu-Pro-Glu(OMe)-CH2F |
| Sequence Short | VLPX |
| 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. |
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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