Novel salts of 3-[(DIMETHYLAMINO)METHYL]-N--1-BENZOFURAN-2-CARBOXAMIDE, related crystalline forms, method for preparing the same and pharmaceutical compositions containing the same
Described herein are salts of 3-[(dimethylamino)methyl]-N-{2-[4-(hydroxycarbamoyl)phenoxy]ethyl}-1-benzofuran-2-carboxamide, in particular that of formula (I):wherein HA is naphthalene-1,5-disulfonic acid, naphthalene-2-sulfonic acid, oxalic acid, benzenesulfonic acid, or sulfuric acid, or hydrates thereof, and crystalline forms thereof characterized by the powder X-ray diffraction diagram and the 13C CP/MAS NMR solid state spectrum. Also described are compositions, methods of use and preparation thereof.