A selective, reversible inhibitor of N-WASP (neural Wiskott-Aldrich syndrome protein) that selectively blocks actin filament assembly. Appears to bind to N-WASP, stabilize the autoinhibited conformation and prevent the activation of Arp2/3 (actin-related protein 2/3) complex. Purity: ≥98% (HPLC). Solubility: Soluble in ethanol (10 mg/ml with warming) or DMSO (25 mg/ml). Long Term Storage: -20°C.