Valbenazine tosylate, the tosylate salt of valbenazine, is a vesicular monoamine transporter 2 (VMAT2) inhibitor with a Ki value of 150 nM while displaying no significant binding to VAMT1(Ki<10 μM).
FFN200 is a vesicular monoamine transporter 2 (VMAT2) substrate that selectively traces monoamine exocytosis in both neuronal cell culture and brain tissue.