| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-106928 | N/A | Impurity | |
| Erlotinib Impurity 28 | ||||
| C4X-106929 | N/A | Impurity | |
| Erlotinib Impurity 29 | ||||
 | C4X-10693 | 183321-82-6 | Impurity | |
| Erlotinib Impurity 3 | ||||
| C4X-106930 | N/A | Impurity | |
| Erlotinib Impurity 30 | ||||
| C4X-106931 | N/A | Impurity | |
| Erlotinib Impurity 31 | ||||
| C4X-106932 | 236750-65-5 | Impurity | |
| Erlotinib Impurity 32 | ||||
| C4X-106933 | 80407-64-3 | Impurity | |
| Erlotinib Impurity 33 | ||||
 | C4X-106934 | 183322-17-0 | Impurity | |
| Erlotinib Impurity 34 | ||||
| C4X-106935 | N/A | Impurity | |
| ErlotiniB impurity 35 | ||||
| C4X-106936 | N/A | Impurity | |
| ErlotiniB impurity 36 | ||||
