 | C4X-105834 | 702-77-2 | Impurity | |
| Memantine Impurity 34 |
 | C4X-105837 | 15210-60-3 | Impurity | |
| Memantine Related Compound H |
 | C4X-105838 | 33103-93-4 | Impurity | |
| Memantine Impurity 38 |
 | C4X-10584 | 941-37-7 | Impurity | |
| Memantine Related Compound D |
 | C4X-105840 | N/A | Impurity | |
| Memantine Impurity 40 |
| C4X-105841 | 1807608-00-9 (free base? | Impurity | |
| Memantine Related Compound 2 Oxalate |
 | C4X-105842 | 1262583-10-7 | Impurity | |
| Memantine Related Compound 3 |
| C4X-105843 | 53343-18-3 | Impurity | |
| Memantine Impurity 43 |
| C4X-105845 | N/A | Impurity | |
| Memantine Impurity 45 |
| C4X-105847 | 90812-21-8 | Impurity | |
| Memantine impurity 47 |
