| CAS No. | 615-72-5 |
| Molecular Formula | C6H8N2O |
| Molecular Weight | 124.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 124.14 g/mol gives Esomeprazole Impurity 33 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Esomeprazole Impurity 33 (CAS 615-72-5), a pharmacopoeial impurity reference standard (molecular formula C6H8N2O, MW 124.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C6H8N2O, Esomeprazole Impurity 33 contains an amide group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 124.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Esomeprazole Impurity 33 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C6H8N2O |
| Molecular Weight | 124.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |