Lornoxicam Impurity 99 CAS CATO-C4X-201699
| CAS No. | CATO-C4X-201699 |
| Molecular Formula | C9H8ClNO5S2 |
| Molecular Weight | 309.75 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 Lornoxicam Impurity 99.
Lornoxicam Impurity 99 (CAS CATO-C4X-201699) is a certified pharmaceutical impurity reference standard with the molecular formula C9H8ClNO5S2 and a molecular weight of 309.75 g/mol.
Structurally, Lornoxicam Impurity 99 (C9H8ClNO5S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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 309.75 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.
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 | C9H8ClNO5S2 |
| Molecular Weight | 309.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Lornoxicam Standards
- Lornoxicam Impurity 9 (CAS 70415-50-8)
- Lornoxicam impurity 83 (CAS CATO-C4X-201683)
- Lornoxicam Impurity 4 (CAS 106820-59-1)
- Lornoxicam Impurity 107 (CAS CATO-C4X-2016107)
- Lornoxicam Impurity 3 (CAS CATO-C4X-20163)
- Lornoxicam Impurity 79 (CAS 1629463-16-6)
- Lornoxicam Impurity 109 (CAS CATO-C4X-2016109)
- Lornoxicam Impurity 28 (CAS CATO-C4X-201628)
Recommended Standards
- [Propanedioato(2-)-O,O'](8-quinolinamine-N1,N8)copper (CAS 64828-02-0)
- N-(4-Chlorophenyl)-2-(4-ethyl-2,3-dioxopiperazin-1-yl)acetamide (CAS 868680-44-8)
- 3-((5-Chloro-2-methoxyphenyl)amino)-1-(4-fluorophenyl)propan-1-ol (CAS 477328-82-8)
- N-((2-Chloropyridin-3-yl)carbamothioyl)-2-fluorobenzamide (CAS 866014-51-9)
- Ranolazine impurity 18 (CAS CATO-C4X-102618)
- Olanzapine Impurity 33 (CAS CATO-C4X-117833)
- Suvorexant Impurity 47 (CAS CATO-C4X-181247)
- 1-(2-Fluorophenyl)-2-tosylethanone (CAS 1492822-28-2)
- Octamethylcyclotetrasilazane (CAS 1020-84-4)
- 4-Bromo-2,3,7,8-tetrachlorodibenzo[b,d]furan (CAS 115656-08-1)
- 4-[(1H-1,2,4-Triazol-1-yl)methyl]piperidine (CAS 1211590-58-7)
- N-(1-(1H-benzo[d][1,2,3]triazol-1-yl)-2-methylpropyl)benzo[d]thiazol-2-amine (CAS 303756-66-3)
- 2-(4-(Aminomethyl)-6-chloro-3-(difluoromethyl)pyridin-2-yl)acetic acid (CAS 1805279-02-0)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
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