Sodium Cromoglicate Impurity 28 CAS CATO-C4X-201128
| CAS No. | CATO-C4X-201128 |
| Molecular Formula | C42H40O18 |
| Molecular Weight | 832.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Sodium Cromoglicate Impurity 28 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 832.76 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Sodium Cromoglicate Impurity 28 (CAS CATO-C4X-201128), a pharmacopoeial impurity reference standard (molecular formula C42H40O18, MW 832.76 g/mol) used for the identification and quantification of trace impurities in APIs.
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 Sodium Cromoglicate Impurity 28 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 | C42H40O18 |
| Molecular Weight | 832.76 g/mol |
| Purity | 97%+ |
| 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) | 23.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Sodium Standards
- Sodium Cromoglicate Impurity 16 (CAS CATO-C4X-201116)
- Sodium Cromoglicate Impurity 26 (CAS CATO-C4X-201126)
- Sodium Cromoglicate Impurity 22 (CAS CATO-C4X-201122)
- Cromoglicate Lisetil (CAS 110816-79-0)
- Sodium Cromoglicate Impurity 21 (CAS CATO-C4X-201121)
- Sodium Cromoglicate Impurity 29 (CAS CATO-C4X-201129)
- Sodium Cromoglicate Impurity 23 (CAS CATO-C4X-201123)
- Cromoglicate EP Impurity B (CAS 16150-45-1)
Recommended Standards
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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