| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-1069128 | 183321-84-8 | Impurity | |
| Erlotinib impurity 128 | ||||
 | C4X-1069129 | N/A | Impurity | |
| Erlotinib impurity 129 | ||||
 | C4X-106913 | 183322-18-1 | Impurity | |
| Erlotinib Impurity 13 | ||||
 | C4X-1069130 | 585-79-5 | Impurity | |
| Erlotinib impurity 130 | ||||
| C4X-1069131 | N/A | Impurity | |
| Erlotinib impurity 131 | ||||
| C4X-1069132 | N/A | Impurity | |
| Erlotinib impurity 132 | ||||
| C4X-1069133 | N/A | Impurity | |
| Erlotinib impurity 133 | ||||
| C4X-1069134 | N/A | Impurity | |
| Erlotinib impurity 134 | ||||
| C4X-1069135 | N/A | Impurity | |
| Erlotinib Impurity 135 | ||||
| C4X-1069136 | 1058651-74-3 | Impurity | |
| Erlotinib impurity 136 | ||||
