| Fexofenadine Process Impurity 2 | 169032-11-5 | Ax-IMP2871 |
| Fexofenadine Process Impurity 1 | 18755-52-7 | Ax-IMP2870 |
| Fexofenadine Impurity 2 | 169280-26-6 | Ax-IMP2869 |
| Fexofenadine N-Oxide | 1422515-52-3 | Ax-IMP2868 |
| Gabapentin Impurity 1 | 6700-95-4 | Ax-IMP2867 |
| Bispyribac Sodium Impurity | 13223-26-2 | Ax-IMP2866 |
| Bispyribac Sodium Impurity-1 | NA | Ax-IMP2865 |
| 3-ethoxy-4-hydroxybenzonitrile | 60758-79-4 | Ax-1152 |
| 6-hydroxy-1-methyl-3,4-dihydroquinolin-2(1H)-one | 69601-46-3 | Ax-1151 |
| Melatonin Metabolite | 52450-38-1 | Ax-IMP2864 |