Norvoncomycin hydrochloride;Norvancomycin hydrochloride;N-Desmethyl Vancomycin B Hydrochloride;Norvoncomycin hydrochloride USP/EP/BP;DESMETHYL-VANCOMYCIN HYDROCHLORIDE;Desmethyl-vancomycin,Norvancomycin,Bacterial,Norvancomycin hydrochloride,Inhibitor,inhibit;Vancomycin EP Impurity A HCl