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AS-99 TFA is a potent, and selective ASH1L histone methyltransferase inhibitor with an IC50 of 0.79 μM. It exhibits robust anti-leukemic activity by blocking cell proliferation, inducing apoptosis and differentiation. AS-99 TFA exerts its effects by downregulating MLL fusion target genes and has been shown to significantly reduce leukemia burden in vivo.

| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 1 mg | $215 | - | In Stock | |
| 5 mg | $536 | - | In Stock | |
| 10 mg | $909 | - | In Stock |
| Description | AS-99 TFA is a potent, and selective ASH1L histone methyltransferase inhibitor with an IC50 of 0.79 μM. It exhibits robust anti-leukemic activity by blocking cell proliferation, inducing apoptosis and differentiation. AS-99 TFA exerts its effects by downregulating MLL fusion target genes and has been shown to significantly reduce leukemia burden in vivo. |
| Targets&IC50 | ASH1L histone methyltransferase:0.79 μM |
| In vitro | In vitro, AS-99 TFA exhibits >100-fold selectivity for ASH1L over 20 other histone methyltransferases (e.g., NSD1/2/3). In MLL-rearranged leukemia cells (MOLM13, MV4;11), AS-99 (1–8 μM) induces apoptosis, reduces H3K36me2, and dose-dependently downregulates leukemogenic genes including MEF2C, FLT3, and HOXA9 [1]. |
| In vivo | In MLL leukemia xenograft mouse models, i.p. administration of AS-99 TFA (30 mg/kg, q.d.) for 14 days significantly reduces the leukemia burden without affecting blood counts in normal mice. Pharmacokinetic studies reveal that AS-99 has favorable exposure in mice, with an AUC of 10699 hrng/mL and a half-life of approximately 5-6 hours after i.p. injection [1]。 |
| Molecular Weight | 707.71 |
| Formula | C29H31F6N5O5S2 |
| Cas No. | 3115178-55-4 |
| Smiles | O=C(O)C(F)(F)F.O=C(NCC=1C=CC=2C(=CN(C2C1)C3CCN(CC3)S(=O)(=O)C(F)(F)F)C=4C=CC=C(C4)C(=S)N)C5CN(C)C5 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year Shipping with blue ice/Shipping at ambient temperature. | ||||||||||||||||||||||||||||||||||||||||
| Solubility Information | H2O: 10 mg/mL (14.13 mM) DMSO: 80 mg/mL (113.04 mM), Sonication is recommended. | ||||||||||||||||||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+40% PEG300+5% Tween-80+45% Saline: 3.30 mg/mL (4.66 mM), Sonication is recommended. 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 | |||||||||||||||||||||||||||||||||||||||||
H2O/DMSO
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. | |||||||||||||||||||||||||||||||||||||||||
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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