Lornoxicam impurity 64 CAS CATO-C4X-201664
| CAS No. | CATO-C4X-201664 |
| Molecular Formula | C8H9ClO5S2 |
| Molecular Weight | 284.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Lornoxicam impurity 64 (CAS CATO-C4X-201664) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9ClO5S2 and a molecular weight of 284.74 g/mol.
Based on its molecular formula C8H9ClO5S2, Lornoxicam impurity 64 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 284.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C8H9ClO5S2 |
| Molecular Weight | 284.74 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Lornoxicam Standards
- Lornoxicam Impurity 46 (CAS CATO-C4X-201646)
- Lornoxicam impurity 57 (CAS 1212061-59-0)
- Lornoxicam impurity 90 (CAS CATO-C4X-201690)
- Lornoxicam Impurity 106 (CAS CATO-C4X-2016106)
- Lornoxicam impurity 68 (CAS CATO-C4X-201668)
- Lornoxicam Impurity 37 (CAS 106820-63-7)
- Lornoxicam impurity 48 (CAS 126910-68-7)
- Lornoxicam Impurity 96 (CAS CATO-C4X-201696)
Recommended Standards
- Procaine Impurity 6 (CAS CATO-C4X-26236)
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- Diazepam EP Impurity F (CAS 31269-33-7)
- Droperidol EP Impurity B (CAS 1026015-45-1)
- Rimegepant Impurity 69 (CAS CATO-C4X-248769)
- Paliperidone Impurity 57 (CAS CATO-C4X-172457)
- Fluvoxamine impurity 45 (CAS CATO-C4X-195145)
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- Met(O)14-Exenatide trifluoroacetate salt (CAS 1678417-38-3)
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