Sulfasalazine EP Impurity A CAS 1391062-35-3
| CAS No. | 1391062-35-3 |
| Molecular Formula | C28H22N8O5S2 |
| Molecular Weight | 614.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 614.65 g/mol gives Sulfasalazine EP Impurity A distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Sulfasalazine EP Impurity A (CAS 1391062-35-3) is a certified pharmaceutical impurity reference standard with the molecular formula C28H22N8O5S2 and a molecular weight of 614.65 g/mol.
Sulfasalazine EP Impurity A (C28H22N8O5S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Sulfasalazine EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H22N8O5S2 |
| Molecular Weight | 614.65 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 2 |
Related Sulfasalazine Standards
- Sulfasalazine EP Impurity E (CAS 1391062-34-2)
- Sulfasalazine EP Impurity G (CAS 1391062-37-5)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9)
- Sulfasalazine impurity 15 (CAS CATO-C4X-141915)
- Sulfasalazine Impurity 21 (CAS 2033064-44-5)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9（free base）)
- Sulfasalazine Impurity 19 (CAS 2033064-46-7)
- Sulfasalazine Impurity 17 (CAS CATO-C4X-141917)
Recommended Standards
- Posaconazole Impurity 52 (CAS 161532-56-5)
- Tigecycline impurity 16 (CAS CATO-C4X-186016)
- Fenpicoxamid (CAS 517875-34-2)
- N-Nitroso Tigecycline (CAS CATO-C4X-186018)
- Leuprorelin EP Impurity F (CAS 1872435-00-1)
- Daprodustat Impurity 21 (CAS 918641-99-3)
- Iguratimod Impurity 48 (CAS CATO-C4X-1826148)
- 2,3-Dimethylanthracene (CAS 613-06-9)
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- Methyl (S)-4-azido-2-((tert-butoxycarbonyl)amino)butanoate (CAS 359781-97-8)
- 2-Amino-N-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)-N-methylacetamide hydrochloride (CAS 1580432-67-2)
- N-(3-Cyclopropyl-3-hydroxypropyl)-3-(thiophen-3-yl)acrylamide (CAS 1396892-73-1)
- Tert-butyl (1S,6S,7S)-7-(trifluoromethyl)-2-azabicyclo[4.1.0]Heptane-2-carboxylate (CAS 1623162-52-6)
- FMRF Amide Related Peptide. (CAS 149471-12-5)
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