| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-127033 | N/A | Impurity | |
| Cefaclor Impurity 33 | ||||
| C4X-127035 | N/A | Impurity | |
| Cefaclor Impurity 35 | ||||
| C4X-127036 | N/A | Impurity | |
| Cefaclor Impurity 36 | ||||
| C4X-127037 | 21746-02-1 | Impurity | |
| Cefaclor Impurity 37 | ||||
| C4X-127038 | N/A | Impurity | |
| Cefaclor Impurity 38 | ||||
| C4X-127039 | N/A | Impurity | |
| Cefaclor Impurity 39 | ||||
 | C4X-12704 | 152575-13-8 | Impurity | |
| Cefaclor EP Impurity D (Mixture of Diastereomers) | ||||
| C4X-127040 | 53483-70-8 | Impurity | |
| Cefaclor Impurity 40 | ||||
| C4X-127041 | N/A | Impurity | |
| Cefaclor Impurity 41 | ||||
 | C4X-127043 | 2882-18-0 | Impurity | |
| Cefaclor Impurity 43 | ||||
