| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-204227 | 63468-95-1 | Impurity | |
| " Neostigmine Impurity 27" | ||||
 | C4X-204228 | N/A | Impurity | |
| Neostigmine Impurity 28 | ||||
| C4X-204229 | N/A | Impurity | |
| Neostigmine Impurity 29 | ||||
 | C4X-20423 | 4312-54-3 | Impurity | |
| Neostigmine Impurity 3 | ||||
| C4X-204230 | N/A | Impurity | |
| Neostigmine Impurity 30 | ||||
| C4X-204231 | 22237-93-0?free base? | Impurity | |
| Neostigmine impurity 31 | ||||
| C4X-204232 | 23040-64-4 | Impurity | |
| Neostigmine impurity 32 | ||||
| C4X-204233 | N/A | Impurity | |
| Neostigmine impurity 33 | ||||
| C4X-204234 | N/A | Impurity | |
| Neostigmine impurity 34 | ||||
| C4X-204235 | N/A | Impurity | |
| Neostigmine impurity 35 | ||||
