A novel Schiff base was synthesized by the reaction of terephthaldehyde with thiosemicarbazide. The structure was confirmed by elemental analysis, IR, UV-vis, 1H NMR and X-ray single crystal diffractometry and the composition of the compound is identified as C16H26N8O2S2. The preliminary anti-bacterial activity tests showed the Schiff base possesses an inhibition activity towards Escherichia Coli, Staphylococcus aureus and Bacillus subtilis.
A new,simple and convenient method was proposed to determine FLRX.Cyclic voltammetric behavior of Fleroxacin(FLRX) on graphite electrode was studied.FLRX can be strongly adsorbed on graphite electrode.At the potential of +1.040V(vs.SCE),FLRX is oxidized and adsorbed on the electrode surface.Using HAc～NaAc as a buffer solution, FLRX showed a reduction wave and the peak potential of -0.110V(vs.SCE) by linear sweep voltammetry after the electrode was washed by double distilled water.A new method for the determination of FLRX was established by adsorptive transfer stripping voltammetry.The peak current is proportional to the concentration of fleroxacin in the range of 4～42 μ g/mL.The method is simple,sensitive,fairly free of interference and accurate.
