Single dose safety and tolerability study: evaluate safety and tolerability of intravenous infusion nemonoxacin 25mg, 50mg, 125mg, 250mg, 500mg, 750mg, 1000mg and 1250mg.~Single dose pharmacokinetic (PK) study:evaluate PK profile of doses of 250mg, 500mg or 750mg intravenous infusion nemonoxacin .~Multiple dose study: evaluate PK profile of doses of 500mg, 650mg or 750mg intravenous infusion nemonoxacin after consecutive 10 days.
The purpose of this study is to evaluate the safety and tolerability of nemonoxacin in healthy Chinese volunteers.