Ozefloxacin Impurity 10 CAS 211576-36-2
| CAS No. | 211576-36-2 |
| Molecular Formula | C12H12Cl2O3 |
| Molecular Weight | 275.13 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ozefloxacin Impurity 10.
Ozefloxacin Impurity 10 (CAS 211576-36-2) is a certified pharmaceutical impurity reference standard with the molecular formula C12H12Cl2O3 and a molecular weight of 275.13 g/mol.
Ozefloxacin Impurity 10 (C12H12Cl2O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C12H12Cl2O3 |
| Molecular Weight | 275.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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 |
| CAS Registry Year (est.) | 2017 |
| Halogen Content | Cl-containing |
Related Ozefloxacin Standards
- Ozefloxacin Impurity 24 (CAS CATO-C4X-279624)
- Ozefloxacin Impurity 23 (CAS 2767548-40-1)
- Ozefloxacin Impurity 20 (CAS CATO-C4X-279620)
- Ozefloxacin Impurity 22 (CAS CATO-C4X-279622)
- Ozefloxacin Impurity 18 (CAS 856836-09-4)
- Ozefloxacin Impurity 21 (CAS 2767548-38-7)
- Ozefloxacin Impurity 9 (CAS CATO-C4X-27969)
- Ozefloxacin Impurity 11 (CAS CATO-C4X-279611)
Recommended Standards
- Lornoxicam Impurity 96 (CAS CATO-C4X-201696)
- Methyl 3-(4-bromo-3,5-dimethyl-1h-pyrazol-1-yl)-2-methylpropanoate (CAS 1005634-07-0)
- Lornoxicam impurity 48 (CAS 126910-68-7)
- Ethyl 4-bromo-1,3-diethyl-1H-pyrazole-5-carboxylate (CAS 1020722-40-0)
- Abacavir EP Impurity D HCl (CAS 1443421-67-7 (free base))
- Meglumine Impurity 5 (CAS 10356-92-0)
- Capivasertib Impurity 26 (CAS CATO-C4X-331226)
- (R)-tert-Butyl 2-aminopropanoate (CAS 59624-87-2)
- ethyl 2-amino-4,6-dichloronicotinate (CAS 1438255-18-5)
- 2,6-Dimethylpyridin-4(1H)-one (CAS 7516-31-6)
- 5-(Methoxymethyl)isoxazol-3-amine hydrochloride (CAS 1820615-29-9)
- 4-Chloro-2-isocyanatotoluene (CAS 40411-27-6)
- Methyl 4-amino-4-phenylbutanoate hydrochloride (CAS 56523-55-8)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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