| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-106957 | 1312937-41-9 | Impurity | |
| Erlotinib Impurity 57 | ||||
 | C4X-106958 | N/A | Impurity | |
| Erlotinib Impurity 58 | ||||
| C4X-106959 | N/A | Impurity | |
| Erlotinib Impurity 59 | ||||
 | C4X-10696 | 882420-22-6 | Impurity | |
| Erlotinib Impurity 6 | ||||
| C4X-106960 | N/A | Impurity | |
| Erlotinib Impurity 60 | ||||
| C4X-106961 | 20825-87-0 | Impurity | |
| Erlotinib Impurity 61 | ||||
| C4X-106962 | N/A | Impurity | |
| Erlotinib Impurity 62 | ||||
| C4X-106963 | N/A | Impurity | |
| Erlotinib Impurity 63 | ||||
| C4X-106964 | N/A | Impurity | |
| Erlotinib Impurity 64 | ||||
| C4X-106965 | N/A | Impurity | |
| Erlotinib Impurity 65 | ||||
