Description_x000D_ Application_x000D_ Lidocaine N-ethyl bromide has been used as a standard in studying the demethylation effect of lidocaine N-ethyl bromide on breast cancer cells in vitro using colorimetric assay._x000D_ Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support._x000D_ Packaging_x000D_ 50, 250 mg in poly bottle_x000D_ Biochem/physiol Actions_x000D_ A quaternary derivative of lidocaine that is not membrane permeable. Blocks both fast Na+-dependent action potentials and voltage-dependent, non-inactivating Na+ conductance.