Disclosed herein are synaptojanin-2 inhibitors, and novel methods and uses utilizing same for preventing tumor metastasis, treating cancer or inhibiting synaptojanin-2. Compounds disclosed herein include chlorhexidine and pyrvinium, the compound having the formula:and compounds characterized by the general formula:X-L-[(Y)i-(Z)j]-(L-X)kand/or by the general formula:wherein L, X, Y, Z, D, E, i, j and k are as defined herein.