TABLE 1.

UV data obtained from the HPLC run in acetonitrile-formic acid (0.2%; 50:50) showing the hypsochromic shift of the absorption maximum

Compound	λmax1 (nm)	λmax2 (nm)	λmax3 (nm)
Sparfloxacin	364	292	218
Photoproduct [M+H]+ with a mass of 375 Da	353	286	227
Compound 10	350	288	242
Photoproduct [M+H]+ with a mass of 335 Da	341	284	227