A cell-permeable thiophene carboxymide derived compound that acts as a direct and selective antagonist of TrkB receptor. Binds to the high affinity site on the extracellular domain of TrkB in a dose-dependent manner (Kd = 10nM) exhibiting much reduced binding to the low affinity site (Kd =12uM) indicating that it does not compete with BDNF for the same binding site. Does not affect TrkA or TrkC receptors. Shown to permeate the blood-brain barrier, however, its antagonistic effects are not uniform throughout the brain. Does not affect the survivability of neurons. Reduces anxiety and depression related behavior in mice. Solubility:DMSOPrimary Target:TrkBPrimary Target Ki:10nMStorage and Stability:May be stored at 4°C. For long-term storage, aliquot and store at 4°C. Do not freeze. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.