TCS-401 (HCI) is a selective inhibitor of protein-tyrosine phosphatase 1B (PTP1B; Ki = 0.29 µM). It inhibits the protein phosphatases CD45 D1D2, PTPβ, PTPε D1, SHP-1, PTPα D1, and LAR D1D2 at much higher concentrations (Kis = 59, 560, 1,100, >2,000, >2,000, and >2,000 μM, respectively).1 Several PTPs have been proposed to act as negative regulators of insulin signaling, thus this enzyme is a potential drug target in diabetes.

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.