| Netarsudil Process Impurity 3 | NA | Ax-IMP2807 |
| Dimetindene Impurity F | NA | Ax-IMP1726 |
| Netarsudil Process Impurity 4 | NA | Ax-IMP2808 |
| Dimetindene Impurity G | NA | Ax-IMP1727 |
| Netarsudil Process Impurity 5 | NA | Ax-IMP2809 |
| Dimetindene Impurity I | 151562-10-6 | Ax-IMP1728 |
| Pregablin Impurity D | 4118-51-8 | Ax-IMP1759 |
| Netarsudil Process Impurity 7 | NA | Ax-IMP2811 |
| Dimetindene Process Impurity 1 | 867038-07-1 | Ax-IMP1729 |
| Netarsudil Process Impurity 8 | NA | Ax-IMP2812 |