Meloxicam Impurity 11 CAS 1865298-74-3
| CAS No. | 1865298-74-3 |
| Molecular Formula | C6H8N2O2S |
| Molecular Weight | 172.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Meloxicam Impurity 11 (CAS 1865298-74-3), a pharmacopoeial impurity reference standard (molecular formula C6H8N2O2S, MW 172.20 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Meloxicam Impurity 11 (C6H8N2O2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C6H8N2O2S |
| Molecular Weight | 172.20 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Meloxicam Standards
- Meloxicam Impurity 17 (CAS CATO-C4X-169017)
- Meloxicam Impurity 10 (CAS CATO-C4X-169010)
- Meloxicam Impurity 9 (CAS 13165-80-5)
- Meloxicam Impurity 16 (CAS 39122-64-0)
- Meloxicam Impurity 7 (CAS 632-25-7)
- Meloxicam impurity 13 (CAS CATO-C4X-169013)
- Meloxicam Impurity 12 (CAS 5510-10-1)
- Meloxicam Impurity 8 (CAS 125372-22-7)
Recommended Standards
- Sulfadimethoxine EP Impurity E (CAS 63-74-1)
- Xylometazoline EP Impurity E (CAS 104-15-4)
- Vonoprazan Fumarate Impurity 74 (CAS 4847-34-1)
- Iguratimod Impurity 11 (CAS 16156-59-5)
- Paroxetine HCl EP Impurity C (CAS 105813-14-7(free base))
- Eltrombopag Impurity 114 (CAS CATO-C4X-1198114)
- Peramivir impurity 153 (CAS CATO-C4X-1833153)
- 5-Bromo-2,2'-diethoxy-4,5'-bipyridine (CAS 871269-04-4)
- 3-Morpholinopyrazine-2-carbonitrile (CAS 67130-86-3)
- cis-3-[[[(1,1-Dimethylethoxy)carbonyl]amino]methyl]cyclobutanecarboxylic acid (CAS 1427319-48-9)
- 1,2,3,4,5,6-Hexakis(trifluoromethyl)benzene (CAS 2340-93-4)
- Diethyl 2,2'-(((ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(azanediyl))diacetate (CAS 866008-08-4)
- 2,8-Dichloro-6-fluoroquinazolin-4(3H)-one (CAS 1702815-68-6)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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