KPT 330 is a chromosome maintenance protein 1 (CRM1) inhibitor. KPT 330 suppresses downstream effectors of B-cell activation, proliferation and migration in chronic lymphocytic leukemia cells.Molecular Formula:C17H11F6N7OMolecular Weight:443.31Storage and Stability:Store at -20°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap.