Ozenoxacin Impurity 32 CAS CATO-C4X-279632
| CAS No. | CATO-C4X-279632 |
| Molecular Formula | C13H12Cl2O4 |
| Molecular Weight | 303.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ozenoxacin Impurity 32 (C13H12Cl2O4) 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 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 303.14 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Ozenoxacin Impurity 32 (CAS CATO-C4X-279632) is a certified pharmaceutical impurity reference standard with the molecular formula C13H12Cl2O4 and a molecular weight of 303.14 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 | C13H12Cl2O4 |
| Molecular Weight | 303.14 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 |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Ozenoxacin Standards
- Ozenoxacin Impurity 68 (CAS CATO-C4X-279668)
- Ozenoxacin Impurity 71 (CAS CATO-C4X-279671)
- Ozenoxacin Impurity 4 (CAS CATO-C4X-27964)
- Ozenoxacin Impurity 33 (CAS CATO-C4X-279633)
- Ozenoxacin Impurity 39 (CAS CATO-C4X-279639)
- Ozenoxacin Impurity 31 (CAS CATO-C4X-279631)
- Ozenoxacin Impurity 65 (CAS CATO-C4X-279665)
- Ozenoxacin Impurity 66 (CAS 23612-56-8)
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- 2-Chloro-4-ethynyl-1,1'-biphenyl (CAS 56917-41-0)
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