Tazobactam diphenylmethyl ester89789-07-1100 % similar Tazobactam89786-04-963 % similar Tazobactam sodium89785-84-260 % similar Sultamicillin76497-13-735 % similar Sulbactam pivoxil69388-79-035 % similar Sulbactam68373-14-833 % similar Sultamicillin tosylate83105-70-832 % similar Sulbactam sodium69388-84-732 % similar