From: Metabolite proving fungal cleavage of the aromatic core part of a fluoroquinolone antibiotic
Characteristic | Â | Â | Values for | Â | Â | Â | Â | |
---|---|---|---|---|---|---|---|---|
 | PRA | F-1 | F-2 | F-5 | F-6 | F-9 | F-10 b | F-13 |
Retention time (min) | Â | Â | Â | Â | Â | Â | Â | Â |
Method A | 23.8 | 20.2 | 23.3 | 25.3 | 28.1 | 28.6 | ~2.4 | 15.2 |
Method B | 32.0 | 24.7 | 31.4 | 35.2 | 41.0 | 38.7 | ~2.4 | 16.8 |
Pseudomolecular ion | Â | Â | Â | Â | Â | Â | Â | Â |
[M+H]+ (m/z)a | 397 | 369 | 395 | 411 | 388 | 288 | 127 | 247 |
UV absorption (nm) | Â | Â | Â | Â | Â | Â | Â | Â |
   λmax (major) | 288 | 250 | 288 | 298 | 242 | 272 | - | 280 |
   λmax (minor) | 364 248 | 278 362 374 | 376 392 | 260 374 | 298 330 | 328 350 | - | 320 362 |
   Shoulder | 374 340 |  | 260 |  |  |  |  |  |