STAT3-IN-52 (Compound 9) is a selective and orally active signal transducer and activator of transcription 3 (STAT3) inhibitor. STAT3-IN-52 binds to the pY705 site of STAT3 (Ki = 440 nM), blocking the phosphorylation and dimerization of STAT3. STAT3-IN-52 shows strong cytotoxicity against various cancer cells, such as breast cancer MDA-MB-231 (IC50 = 0.7 μM), medulloblastoma UW426, pancreatic cancer BKPC3 cells. STAT3-IN-52 can induce cell apoptosis, inhibit the STAT3 nuclear transport and DNA binding activity and downregulate the expression of the STAT3 target gene MMP9. STAT3-IN-52 can be used for research related to STAT3 abnormal activation in cancer.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.