Isosulfan Blue Impurity D CAS CATO-C4X-30452
| CAS No. | CATO-C4X-30452 |
| Molecular Formula | C23H23NO7S2 |
| Molecular Weight | 489.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Isosulfan Blue Impurity D 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.
As a process- or degradation-related impurity, Isosulfan Blue Impurity D (CAS CATO-C4X-30452, C23H23NO7S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Isosulfan Blue Impurity D is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 489.56 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).
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.
Physical & Chemical Properties
| Molecular Formula | C23H23NO7S2 |
| Molecular Weight | 489.56 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Isosulfan Standards
- Isosulfan Blue impurity 9 (CAS CATO-C4X-30459)
- Isosulfan Blue impurity 8 (CAS 2284468-92-2)
- Isosulfan Blue Impurity 5 (CAS 2828260-22-4)
- Isosulfan Blue impurity 10 (CAS 43035-11-6)
- Isosulfan Blue (CAS 68238-36-8)
- Isosulfan Blue impurity 6 (CAS CATO-C4X-30456)
- Isosulfan Blue impurity 7 (CAS CATO-C4X-30457)
Recommended Standards
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- Dapagliflozin Impurity 172 (CAS CATO-C4X-1138172)
- Nemonoxacin Impurity 3 (CAS 2770004-82-3)
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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