A 'Cefadrox il Monohydrate Reference Standard' (Lot No.H-1) of the National Laboratories of Foods and Drugs was prepared. Its potency has been determined at 910.5 µg per mg on cefadroxil basis assessed by a three-dose assay method (Tarcza and Garth, 1978) against the U.S.P Cefadroxil Standard. |