Anti-infectives A∥ rights re served Marketed products 4 R R ofloxacin CH3(R,S) NCH CooH levofloxacin CH3 (S) NCH R rufloxacin H NCH3 R nadifloxacin CH3(,S) 〉OH NH pazufloXacin CH3(S) MP士海医药工业研究院 NDUSTRYAnti-infectives All rights re served Marketed products 4 N O COOH F R7 X R N NCH3 R7 ofloxacin CH3 (R,S) O R X levofloxacin CH3 (S) N NCH3 O N NCH3 rufloxacin H S N OH CH2 nadifloxacin CH3 (R,S) pazufloxacin CH3 (S) NH2 O