Sulfadimethoxine Impurity CAS 69943-38-0
| CAS No. | 69943-38-0 |
| Molecular Formula | C8H9NO4S |
| Molecular Weight | 215.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sulfadimethoxine Impurity (CAS 69943-38-0) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9NO4S and a molecular weight of 215.23 g/mol.
Based on its molecular formula C8H9NO4S, Sulfadimethoxine Impurity contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 215.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 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 | C8H9NO4S |
| Molecular Weight | 215.23 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sulfadimethoxine Standards
- Sulfadimethoxine EP Impurity C (CAS 121-62-0)
- Sulfadimethoxine Impurity (CAS 69943-39-1)
- Sulfadimethoxine Impurity (CAS 61439-59-6)
- Sulfadimethoxine Impurity (CAS 98627-35-1)
- Sulfadimethoxine Impurity 20 (CAS CATO-C4X-150420)
- Sulfadimethoxine EP Impurity D (CAS 121-57-3)
- Sulfadimethoxine EP Impurity E (CAS 63-74-1)
- Sulfadimethoxine Impurity (CAS 80314-58-5)
Recommended Standards
- Cefuroxime Impurity 93 (CAS CATO-C4X-124593)
- Ceftazidime Impurity 48 (CAS 64513-00-4)
- Meloxicam Impurity 8 (CAS 125372-22-7)
- Cefotaxime Impurity 80 (CAS CATO-C4X-120180)
- Dexmedetomidine Impurity 16 (CAS 60907-88-2)
- Cefdinir CP Impurity D (CAS 934986-48-8)
- Cefazolin Impurity 55 (CAS 113479-65-5)
- Tert-butyln-[[2-(cyanomethyl)cyclopropyl]methyl]carbamate (CAS 2113141-15-2)
- n-Dotriacontane (CAS 544-85-4)
- Sarcophine (CAS 55038-27-2)
- 2-Amino-2-cyclobutylacetic acid hydrochloride (CAS 1354949-40-8)
- NG25 (CAS 1315355-93-1)
- (3R,5r)-1,1-difluorospiro[2.3]Hexane-5-carboxylic acid (CAS 1773508-80-7)
- Cycloaspeptide A (CAS 109171-13-3)
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