Lornoxicam Impurity 7 CAS 187746-94-7
| CAS No. | 187746-94-7 |
| Molecular Formula | C5H3ClO5S2 |
| Molecular Weight | 242.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Lornoxicam Impurity 7 (CAS 187746-94-7), a pharmacopoeial impurity reference standard (molecular formula C5H3ClO5S2, MW 242.66 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carbohydrate-derived structure, a sulfone group, chlorine substitution, Lornoxicam Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 242.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
As a certified reference material (CRM), Lornoxicam Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H3ClO5S2 |
| Molecular Weight | 242.66 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, water |
| 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 |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Lornoxicam Standards
- Lornoxicam Impurity N1 (CAS 1017791-22-8)
- Lornoxicam impurity 56 (CAS CATO-C4X-201656)
- Lornoxicam impurity 62 (CAS CATO-C4X-201662)
- Lornoxicam impurity 70 (CAS CATO-C4X-201670)
- Lornoxicam Impurity 77 (CAS CATO-C4X-201677)
- Lornoxicam Impurity 34 (CAS 1333316-61-2)
- Lornoxicam Impurity 41 (CAS CATO-C4X-201641)
- Lornoxicam Impurity 26 (CAS 59804-27-2)
Recommended Standards
- Fenofibrate Impurity 15 (CAS CATO-C4X-164315)
- pitolisant impurity 2 (CAS 64230-79-1)
- Apixaban Impurity 105 (CAS 70736-27-5)
- 1-Chloroanthraquinone (CAS 82-44-0)
- Atorvastatin EP Impurity O (CAS 887196-30-7)
- Metaraminol Impurity 67 (CAS CATO-C4X-225267)
- 【肽序重复停用见C4X-201410】Cetrorelix Impurity 22 (CAS CATO-C4X-201422)
- 1-(3-Nitrophenyl)cyclobutan-1-amine (CAS 1260667-44-4)
- 8-Chloro-1,2,3,4-tetrahydroacridin-9-amine (CAS 122994-74-5)
- 4-{[(4-phenoxyphenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 477850-98-9)
- (2-(2,3,4-Trimethoxyphenyl)cyclopropyl)methanamine (CAS 1269531-87-4)
- ((2,6-Difluorophenyl)sulfonyl)glycine (CAS 731003-82-0)
- 2-Chloro-4-(2-ethylpiperidine-1-carboxamido)benzene-1-sulfonyl chloride (CAS 728864-74-2)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com