Dotinurad Impurity 162 CAS CATO-C4X-2494162
| CAS No. | CATO-C4X-2494162 |
| Molecular Formula | C16H13Cl2NO4S |
| Molecular Weight | 386.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Dotinurad Impurity 162 (CAS CATO-C4X-2494162) is a certified pharmaceutical impurity reference standard with the molecular formula C16H13Cl2NO4S and a molecular weight of 386.25 g/mol.
The molecular framework of Dotinurad Impurity 162 (C16H13Cl2NO4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C16H13Cl2NO4S |
| Molecular Weight | 386.25 g/mol |
| Purity | 95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 13 (CAS CATO-C4X-249413)
- Dotinurad Impurity 146 (CAS CATO-C4X-2494146)
- Dotinurad Impurity 246 (CAS CATO-C4X-2494246)
- Dotinurad Impurity 156 (CAS CATO-C4X-2494156)
- Dotinurad Impurity 198 (CAS CATO-C4X-2494198)
- Dotinurad impurity 107 (CAS CATO-C4X-2494107)
- Dotinurad Impurity 225 (CAS CATO-C4X-2494225)
- Dotinurad Impurity 109 (CAS 1285572-82-8)
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