| CAS No. | CATO-C4X-2405198 |
| Molecular Formula | C16H21N5 |
| Molecular Weight | 283.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 283.37 g/mol gives Upadacitinib Impurity 198 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Upadacitinib Impurity 198 (CAS CATO-C4X-2405198), a pharmacopoeial impurity reference standard (molecular formula C16H21N5, MW 283.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Upadacitinib Impurity 198 (C16H21N5) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Upadacitinib Impurity 198 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C16H21N5 |
| Molecular Weight | 283.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |