| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-100999 | N/A | Impurity | |
| Apremilast Impurity 99 | ||||
 | C4X-10101 | 91702-61-3 | Impurity | |
| Acyclovir EP Impurity C | ||||
 | C4X-101010 | 102728-64-3 | Impurity | |
| Valaciclovir EP Impurity I(see C4X-12489) | ||||
 | C4X-101011 | 1797131-64-6 | Impurity | |
| Acyclovir EP Impurity K/Valaciclovir EP Impurity L | ||||
 | C4X-101013 | 1797832-75-7 | Impurity | |
| Aciclovir EP Impurity I | ||||
 | C4X-101014 | 115321-98-7 | Impurity | |
| Methylprednisolone Acetate EP Impurity K | ||||
| C4X-101015 | N/A | Impurity | |
| Acyclovir Impurity 15 | ||||
 | C4X-101016 | 23169-33-7 | Impurity | |
| Acyclovir EP Impurity P | ||||
| C4X-101017 | N/A | Impurity | |
| Acyclovir EP Impurity Q | ||||
| C4X-101018 | N/A | Impurity | |
| Acyclovir EP Impurity R | ||||
