Sulfadimethoxine Impurity 23 CAS CATO-C4X-150423
| CAS No. | CATO-C4X-150423 |
| Molecular Formula | C6H7N2O2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sulfadimethoxine Impurity 23 (CAS CATO-C4X-150423) is a certified pharmaceutical impurity reference standard with the molecular formula C6H7N2O2SNa and a molecular weight of 194.18 g/mol.
The molecular framework of Sulfadimethoxine Impurity 23 (C6H7N2O2SNa) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Sulfadimethoxine Impurity 23 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 | C6H7N2O2S Na |
| Molecular Weight | 194.18 g/mol |
| Purity | 97%+ |
| 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) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Sulfadimethoxine Standards
- Sulfadimethoxine-D4 (CAS 1020719-80-5)
- Sulfadimethoxine Sodium Salt (CAS 1037-50-9)
- Sulfadimethoxine EP Impurity D (CAS 121-57-3)
- Sulfadimethoxine EP Impurity C (CAS 121-62-0)
- Sulfadimethoxine (CAS 122-11-2)
- Sulfadimethoxine Impurity (CAS 13145-56-7)
- Sulfadimethoxine EP Impurity F (CAS 19868-00-9)
- Sulfadimethoxine EP Impurity A (CAS 3289-50-7)
Recommended Standards
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- Linagliptin Impurity 113 (CAS 2803369-89-1)
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- 3-Morpholino-3-phenyl-3-(thiophen-2-yl)propan-1-ol (CAS 1227-99-2)
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- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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