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Purity: ≥98%
STAT5-IN-1 (also known as STAT5 Inhibitor) is a STAT5 (signal transducer and activator of transcription 5) inhibitor with anticancer activity. It inhibits STAT5 with IC50 of 47 μM for STAT5β isoform. STAT5-IN-1 is a cell permeable non-petide nicotinoyl hydrazone (also Chromone‐Based) which suppresses STAT5 via binding to the SH2 domain. STAT5, a transcription factor, is a member of the STAT family of proteins that is implicated in cell growth and differentiation. STAT5 functions in various biological processes such as homeostasis of hematopoietic stem cells, development of blood cells, growth hormone effects, and differentiation of mammary epithelium. STAT5 has been reported as a therapeutic target for the treatment of human cancers.
| ln Vitro |
A member of the STAT protein family, signal transducer and activator of transcription 5 (STAT5) is connected to the development and maturation of cells. By attaching itself to the SH2 domain, STAT5-IN-1 suppresses STAT5. There is a slight inhibition of the tyrosine kinase Lck's and STAT3, STAT1, and SH2 domain functions (IC50>500 μM). In K562 nuclear extracts, STAT5-IN-1 inhibits the binding of STAT5 and STAT5 DNA. The activity of STAT5-IN-1 against STAT5β is unaffected by the substitution of an ethyl group for the hydrogen at position C6 in the chromone ring, but all selectivity against other STAT family members is lost[1].
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| References |
[1]. Müller J, et al. Discovery of chromone-based inhibitors of the transcription factor STAT5. Chembiochem. 2008 Mar 25;9(5):723-7.
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| Molecular Formula |
C16H11N3O3
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| Molecular Weight |
293.28
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| CAS # |
285986-31-4
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| SMILES |
O=C(N/N=C/C1=COC2=C(C=CC=C2)C1=O)C3=CN=CC=C3
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
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| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2 mg/mL (6.82 mM) (saturation unknown) in 10% DMSO + 40% PEG300 +5% Tween-80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 + to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.4097 mL | 17.0486 mL | 34.0971 mL | |
| 5 mM | 0.6819 mL | 3.4097 mL | 6.8194 mL | |
| 10 mM | 0.3410 mL | 1.7049 mL | 3.4097 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
Chembiochem.2008 Mar 25;9(5):723-7. |
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