| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-106919 | N/A | Impurity | |
| Erlotinib Impurity 19 | ||||
| C4X-10692 | 183321-85-9 | Impurity | |
| Erlotinib Impurity 2 | ||||
 | C4X-106920 | 938185-06-9 | Impurity | |
| Erlotinib Impurity 20 | ||||
| C4X-106922 | N/A | Impurity | |
| Erlotinib Impurity 22 | ||||
 | C4X-106923 | 2055841-66-0 | Impurity | |
| Erlotinib Impurity 23 | ||||
| C4X-106924 | 1624294-38-7 | Impurity | |
| Erlotinib Impurity 24 | ||||
 | C4X-106925 | 179688-29-0 | Impurity | |
| Erlotinib impurity 25 | ||||
 | C4X-106926 | 2204518-92-1 | Impurity | |
| Erlotinib Impurity 26 | ||||
| C4X-106928 | N/A | Impurity | |
| Erlotinib Impurity 28 | ||||
| C4X-106929 | N/A | Impurity | |
| Erlotinib Impurity 29 | ||||
