Reference Standard
| CAS Number | Not assigned |
| Formula | Structure-specific (momelotinib nitroso analogue) |
| Molecular Weight | ~460–480 g/mol |
| Purity | ≥95% |
| Storage | –20 °C; moisture-free conditions. |
Designated “Impurity 7” per internal or regulatory nomenclature; nitrosamine-class impurity.
Regulatory submissions, impurity tracking, LC-MS method specificity.
LC-MS/MS, HRMS, HPLC, NMR (if feasible).
