| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-20423 | 4312-54-3 | Impurity | |
| Neostigmine Impurity 3 | ||||
 | C4X-204231 | 22237-93-0?free base? | Impurity | |
| Neostigmine impurity 31 | ||||
| C4X-204234 | N/A | Impurity | |
| Neostigmine impurity 34 | ||||
| C4X-204235 | N/A | Impurity | |
| Neostigmine impurity 35 | ||||
| C4X-204238 | N/A | Impurity | |
| Neostigmine impurity 38 | ||||
| C4X-204239 | N/A | Impurity | |
| Neostigmine impurity 39 | ||||
 | C4X-20424 | 16088-19-0 | Impurity | |
| Neostigmine EP Impurity C | ||||
| C4X-204240 | N/A | Impurity | |
| Neostigmine impurity 40 | ||||
| C4X-204243 | 2768847-25-0 | Impurity | |
| Neostigmine impurity 43 | ||||
| C4X-204244 | N/A | Impurity | |
| Neostigmine impurity 44 | ||||
