| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-1069118 | 183322-16-9 | Impurity | |
| Erlotinib Impurity 118 | ||||
 | C4X-106912 | 183322-20-5 | Impurity | |
| Erlotinib Impurity 12 | ||||
 | C4X-1069120 | 54060-30-9 | Impurity | |
| Erlotinib Impurity 120 | ||||
 | C4X-1069122 | 1709-44-0 | Impurity | |
| Erlotinib Impurity 122 | ||||
| C4X-1069124 | 7451-98-1 | Impurity | |
| Erlotinib Impurity 124 | ||||
| C4X-1069125 | 207726-02-6 | Impurity | |
| Erlotinib impurity 25 | ||||
| C4X-1069126 | 183320-00-5 | Impurity | |
| Erlotinib impurity 126 | ||||
| C4X-1069127 | 26838-86-8 | Impurity | |
| Erlotinib impurity 127 | ||||
 | C4X-1069128 | 183321-84-8 | Impurity | |
| Erlotinib impurity 128 | ||||
| C4X-1069129 | N/A | Impurity | |
| Erlotinib impurity 129 | ||||
