Dotinurad Impurity 5 CAS 1285572-89-5
| CAS No. | 1285572-89-5 |
| Molecular Formula | C15H12ClNO4S2 |
| Molecular Weight | 369.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Dotinurad Impurity 5 (C15H12ClNO4S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 369.84 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Dotinurad Impurity 5 (CAS 1285572-89-5) is a certified pharmaceutical impurity reference standard with the molecular formula C15H12ClNO4S2 and a molecular weight of 369.84 g/mol.
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.
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 | C15H12ClNO4S2 |
| Molecular Weight | 369.84 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 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Dotinurad Standards
- Dotinurad Impurity 161 (CAS CATO-C4X-2494161)
- Dotinurad Impurity 222 (CAS CATO-C4X-2494222)
- Dotinurad Impurity 204 (CAS CATO-C4X-2494204)
- Dotinurad Impurity 217 (CAS CATO-C4X-2494217)
- Dotinurad Impurity 167 (CAS CATO-C4X-2494167)
- Dotinurad Impurity 1 (CAS 1285573-44-5)
- Dotinurad Impurity 124 (CAS 888730-55-0)
- Dotinurad Impurity 14 (CAS CATO-C4X-249414)
Recommended Standards
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- Atrasentan Impurity 108 (CAS 1059052-13-9)
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- Simvastatin Impurity 19 (CAS CATO-C4X-119919)
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- (Perfluorohexyl)ethylene (CAS 25291-17-2)
- Tert-butyl (4-hydroxy-3-iodophenethyl)carbamate (CAS 788824-50-0)
- Dalbavancin A1 (CAS 171500-80-4)
- 1-Cyclopentylprop-2-en-1-one (CAS 25183-76-0)
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- Acetyl Tetrapeptide-5 (CAS 820959-17-9)
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