Urapidil Impurity N16 CAS 874-14-6
| CAS No. | 874-14-6 |
| Molecular Formula | C6H8N2O2 |
| Molecular Weight | 140.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Urapidil Impurity N16 (CAS 874-14-6) is a certified pharmaceutical impurity reference standard with the molecular formula C6H8N2O2 and a molecular weight of 140.14 g/mol.
Based on its molecular formula C6H8N2O2, Urapidil Impurity N16 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 140.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H8N2O2 |
| Molecular Weight | 140.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Urapidil Standards
- Urapidil Impurity 38 (CAS CATO-C4X-192438)
- Urapidil Impurity 73 (CAS 21236-97-5)
- Urapidil Impurity 75 (CAS 116315-12-9)
- Urapidil Impurity 31 (CAS 40226-15-1)
- Urapidil Impurity 25 (CAS 63959-47-7)
- Urapidil Impurity 33 (CAS 39615-79-7)
- Urapidil Impurity N62 (CAS 41949-07-9)
- Urapidil Impurity 108 (CAS CATO-C4X-1924108)
Recommended Standards
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