Dotinurad Impurity 169 CAS CATO-C4X-2494169
| CAS No. | CATO-C4X-2494169 |
| Molecular Formula | C10H8Cl2O4 |
| Molecular Weight | 263.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Dotinurad Impurity 169 (C10H8Cl2O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 263.07 g/mol, it falls into the medium-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 169 (CAS CATO-C4X-2494169) is a certified pharmaceutical impurity reference standard with the molecular formula C10H8Cl2O4 and a molecular weight of 263.07 g/mol.
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.
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 | C10H8Cl2O4 |
| Molecular Weight | 263.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Dotinurad Standards
- Dotinurad Impurity 228 (CAS CATO-C4X-2494228)
- Dotinurad Impurity 130 (CAS 1368227-41-1)
- Dotinurad Impurity 40 (CAS CATO-C4X-249440)
- Dotinurad Impurity 82 (CAS CATO-C4X-249482)
- Dotinurad Impurity 142 (CAS CATO-C4X-2494142)
- Dotinurad Impurity 103 (CAS CATO-C4X-2494103)
- Dotinurad Impurity 182 (CAS CATO-C4X-2494182)
- Dotinurad Impurity 94 (CAS CATO-C4X-249494)
Recommended Standards
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- Methyl 5-(2-aminophenyl)furan-2-carboxylate (CAS 54023-14-2)
- Belumosudil Impurity 68 (CAS CATO-C4X-298868)
- Sunitinib Impurity 48 (CAS 71294-03-6)
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- Galanin-Like Peptide (rat) trifluoroacetate salt (CAS 245114-97-0)
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