Custom Synthesis
| CAS Number | Not assigned |
| Formula | Approx. C₂₂H₂₂N₄O₄ |
| Molecular Weight | ~406–420 g/mol (structure-dependent) |
| Purity | ≥95% |
| Storage | –20 °C recommended; protect from light. |
Nitro-substituted erlotinib analogue used as an impurity or metabolite reference standard.
Pharmaceutical impurity profiling, method validation, stability and forced-degradation studies.
HPLC-UV, LC-MS, NMR, HRMS.
