Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A series of 2-alkyl-4-arylimidazoles were prepared and their binding affinities to the site-2 sodium (Na + ) channel were determined. SAR studies led to highly potent Na + channel blockers. ... A series of 2-alkyl-4-arylimidazoles were prepared and their binding affinities to the site-2 sodium ( ...