Positive allosteric modulator of α4β2 receptor; increases the potency of Ach-evoked currents ~60 fold without effecting the maximum efficacy (HEK293-hα4β2 cells). Reduces the rate of recovery from desensitization and slows the rate of deactivation. Displays a synergistic effect on the Emax when given with NS206 at 3α:2β receptors. Purity 99%. MW (observed): 248.24