 | C4X-185016 | 1193104-85-6 | Impurity | |
| Cisatracurium EP Impurity M |
 | C4X-185017 | N/A | Impurity | |
| Cisatracurium EP Impurity K Besylate |
| C4X-185018 | N/A | Impurity | |
| Cisatracurium Besilate EP Impurity W |
| C4X-185019 | N/A | Impurity | |
| Atracurium EP Impurity S |
 | C4X-185020 | 1100676-16-1 | Impurity | |
| Cisatracurium EP Impurity F Besylate |
| C4X-185026 | N/A | Impurity | |
| Atracurium Impurity 26 |
 | C4X-185029 | 2767988-76-9 | Impurity | |
| Atracurium Impurity 29 |
| C4X-18503 | 1075727-04-6(free base) | Impurity | |
| Cisatracurium besylate EP Impurity A |
| C4X-185030 | 64228-78-0 | Impurity | |
| Atracurium Impurity R |
| C4X-185031 | 1075726-87-2?free base? | Impurity | |
| Atracurium Impurity 31 |
