Table 3 Intermediate transformation products obtained during the degradation of ofloxacin and para-nitrophenol.
Contaminant | Code | m/z value | Chemical formula | IUPAC Name |
|---|---|---|---|---|
Ofloxacin | OFL1 | 362 | C18H20FN3O4 | 7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid |
OFL2 | 306 | C15H18N3O4+ | 9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid | |
OFL3 | 288 | C15H17N3O3 | 7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid | |
OFL4 | 245 | C14H19N3O | 1-(2-amino-4-(4-methylpiperazin-1-yl)phenyl)prop-2-en-1-one | |
OFL5 | 233 | C13H19N3O | 1-(2-amino-4-(4-methylpiperazin-1-yl)phenyl)ethanone | |
OFL6 | 191 | C11H17N3 | 3-(4-methylpiperazin-1-yl)aniline | |
OFL7 | 151 | C8H13N3 | N1-(2-aminoethyl)benzene-1,3-diamine | |
OFL8 | 69 | C4H7N | buta-1,3-dien-2-amine | |
OFL9 | 118 | C8H7N | 1H-indole | |
OFL10 | 358 | C18H20N3O5− | 6-carboxy-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinolin-8-olate | |
OFL11 | 155 | C8H13NO2 | (Z)-3-(3-methylmorpholino)acrylaldehyde | |
OFL12 | 197 | C11H19NO2 | (Z)-4-methyl-5-(3-methylmorpholino)pent-3-enal | |
OFL13 | 85 | C4H7NO | 3,6-dihydro-2H-1,4-oxazine | |
OFL14 | 141 | C8H15NO | (Z)-5-(ethylamino)-4-methylpent-3-enal | |
OFL15 | 218 | C12H9FNO2• | 7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid | |
OFL16 | 201 | C12H11NO2 | 3-methyl-2H-[1,4]oxazino[2,3,4-ij]quinolin-7(3H)-one | |
OFL17 | 110 | C6H6O2 | hydroquinone | |
OFL18 | 97 | C5H7NO | 2,3-dihydropyridin-4(1H)-one | |
Para-nitrophenol | PNP1 | 139 | C6H5NO3 | 4-nitrophenol |
PNP2 | 154 | C6H4NO4− | 1-nitro-4-oxocyclohexa-2,5-dienolate | |
PNP3 | 110 | C6H6O2 | 4-hydroxycyclohexa-2,5-dienone | |
PNP4 | 110 | C6H6O2 | hydroquinone | |
PNP5 | 126 | C6H6O3 | hydroxyquinol | |
PNP6 | 85 | C4H5O2− | (Z)-4-oxobut-2-en-1-olate | |
PNP7 | 60 | C2H4O2 | (Z)-ethene-1,2-diol | |
PNP8 | 154 | C6H4NO4− | 2-hydroxy-5-nitrophenolate | |
PNP9 | 153 | C6H3NO4 | 4-nitrocyclohexa-3,5-diene-1,2-dione | |
PNP10 | 125 | C6H7NO2 | N-hydroxy-N-phenylhydroxylamine | |
PNP11 | 109 | C6H7NO | 4-aminophenol |
