The values obtained were compared with the
literature value for the extinction coefficient for
cyanidin-3-glucoside of 26 900 L & cm–1 & mol–1 (10), by using molecular weights of 484.5 g & mol –1 for cyanidin-3 glucoside chloride and 449.2 g & mol–1 for cyanidin-3-glucoside; also, percent purity was determined by LC (monitored at 520 and 280 nm, respectively).