Size : 5mg
Synonyms:
| Description | FB23-2 is a potent and selective inhibitor of the mRNA N6-methyladenosine (m6A) demethylase FTO with an IC50 of 2.6 μM. |
| Targets & IC50 | FTO:2.6 μM (IC50) |
| In vitro | FB23-2 directly bind to FTO and selectively inhibit FTO's m6A demethylase activity. Mimicking FTO depletion, FB23-2 dramatically suppresses proliferation and promotes the differentiation/apoptosis of human acute myeloid leukemia (AML) cell line cells and primary blast AML cells in vitro[1]. |
| In vivo | FB23-2 significantly inhibits the progression of human AML cell lines and primary cells in xeno-transplanted mice[1]. |
| Cell Research | Quantitation of FB23 and FB23-2 in AML cells: NB4 and MONOMAC6 cells were treated with 10 μM FB23 or FB23-2 for 24 hr, respectively. Viable cells were distinguished with 0.1% trypan blue, counted and then harvested with PBS by several washings. Cells were diluted into 100 μl with 50% (v/v) water/methanol and followed by several shock freeze-thaw cycles. The supernatants were collected for analysis. The Ultimate 3000 system coupled with a TSQ Quantiva mass spectrometer was applied to determine the cellular concentration of compound FB23 and FB23-2. Analytes were separated on a XSELECT? HSS T3 column (100 mm × 3.0 mm, 2.5 μm). The mobile phases used for elution were (A) 0.1% (v/v) formic acid/water and (B) 0.1% (v/v) formic acid/acetonitrile. The mass spectrometer was operated in the negative MRM mode. Parent-to-product transitions were m/z 375.1→339.1, 375.1→298.1 for FB23, and m/z 390.3→318.0, 390.3→289.9 for FB23-2, respectively[1]. |
| Animal Research | The NSGS mice were bred and subjected to the xeno-transplantation model. For the AML mouse model, 0.2 × 10^6 MONOMAC6 cells were directly transplanted into NSGS mice via tail vein. After 10 days, FB23-2 (2 mg/kg/day) and DMSO vehicle were intraperitoneally injected into the mice for a continuous 10 days. The mice were euthanized by CO2 inhalation if they exhibited classical AML symptoms including hunched posture, paralysis, and reduced body weight. Meanwhile, the PB, spleen, and liver samples were collected for further analysis[1]. |
| Molecular Weight | 392.24 |
| Formula | C18H15Cl2N3O3 |
| Cas No. | 2243736-45-8 |
| Smiles | Cc1noc(C)c1-c1cc(Cl)c(Nc2ccccc2C(=O)NO)c(Cl)c1 |
| Relative Density. | 1.428 g/cm3 (Predicted) |
| Storage | Keep away from direct sunlight, Powder: -20°C for 3 years | In solvent: -80°C for 1 year Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||
| Solubility Information | DMSO: 11.36 mg/mL (28.96 mM), Sonication is recommended.  | |||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+90% (20% SBE-β-CD in Saline): 1.14 mg/mL (2.91 mM), Suspension. 10% DMSO+90% Corn oil: 2.08 mg/mL (5.3 mM), Solution. 10% DMSO+40% PEG300+5% Tween 80+45% Saline: < 1.14 mg/mL (2.91 mM), Lower concentrations may be soluble, but exact solubility limit is unknown. 10% DMSO+90% Saline: < 1.14 mg/mL (2.91 mM), Lower concentrations may be soluble, but exact solubility limit is unknown. Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions. | |||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||
DMSO
Note : The dilution table applies only to solid products. For liquid products, please calculate the stock solution based on the stated concentration and/or density. | ||||||||||||||||||||||||||
For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, and a total of 10 animals are to be administered, using a formulation of 
10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH2O , the resulting working solution concentration would be 2 mg/mL.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.
