| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-137318 | N/A | Impurity | |
| Tryptophan Impurity 18 | ||||
 | C4X-137319 | 5470-37-1 | Impurity | |
| Tryptophan EP Impurity I | ||||
 | C4X-13732 | 184955-21-3 | Impurity | |
| Tryptophan EP Impurity B (Mixture of Diastereomers) | ||||
| C4X-137321 | 55325-48-9 | Impurity | |
| Tryptophan Impurity 21 | ||||
 | C4X-137322 | 881025-90-7 | Impurity | |
| Tryptophan Impurity 22 | ||||
 | C4X-137323 | 62697-73-8 | Impurity | |
| Tryptophan Impurity 23 | ||||
 | C4X-137324 | 4350-09-8 | Impurity | |
| Tryptophan Impurity 24 | ||||
| C4X-137325 | 287170-99-4 (Free Acid) | Impurity | |
| Tryptophan EP Impurity L Lithium Salt (Mixture of Diastereomers) | ||||
 | C4X-137327 | 164068-19-3 | Impurity | |
| Tryptophan EP Impurity J | ||||
| C4X-137328 | 145545-23-9?free base? | Impurity | |
| Tryptophan EP Impurity F HCl | ||||
