 | C4X-18004 | 117380-92-4 | Impurity | |
| Marbofloxacin EP Impurity D |
 | C4X-18005 | 2249835-04-7 | Impurity | |
| Marbofloxacin EP Impurity E |
 | C4X-18006 | 194023-72-8 | Impurity | |
| Marbofloxacin EP Impurity F |
 | C4X-18007 | N/A | Impurity | |
| Marbofloxacin EP Impurity C Sulfate |
| C4X-18008 | 2249835-04-7 (free base) | Impurity | |
| Marbofloxacin EP Impurity E HCl |
| C4X-18011 | N/A | Impurity | |
| Olsalazine EP Impurity A |
 | C4X-18012 | 752188-68-4 | Impurity | |
| Olsalazine sodium EP Impurity B |
| C4X-18013 | 259151-72-9 | Impurity | |
| Olsalazine sodium EP Impurity C |
| C4X-18014 | 93964-55-7 | Impurity | |
| Olsalazine sodium EP Impurity D |
| C4X-18015 | N/A | Impurity | |
| Olsalazine sodium EP Impurity E |
