STAT3-IN-53 (Compound L20) is a STAT3 inhibitor with a Kd value of 6.16 μM. STAT3-IN-53 binds directly to the SH2 domain of STAT3, inhibits phosphorylation at the Y705 site without affecting the total STAT3 protein level, and suppresses the IL-6/JAK/STAT3 pathway. STAT3-IN-53 downregulates the transcription and expression of cyclin-D1 and c-Myc. STAT3-IN-53 induces cell cycle arrest and promotes Apoptosis. STAT3-IN-53 exhibits anticancer activity against colorectal 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.