Sodium Cromoglicate Impurity 25 CAS 40786-63-8
| CAS No. | 40786-63-8 |
| Molecular Formula | C23H22O9 |
| Molecular Weight | 442.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Sodium Cromoglicate Impurity 25 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.
Sodium Cromoglicate Impurity 25 (CAS 40786-63-8) is a certified pharmaceutical impurity reference standard with the molecular formula C23H22O9 and a molecular weight of 442.42 g/mol.
The molecular framework of Sodium Cromoglicate Impurity 25 (C23H22O9) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C23H22O9 |
| Molecular Weight | 442.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| CAS Registry Year (est.) | 1968 |
Related Sodium Standards
- Sodium Cromoglicate Impurity 14 (CAS CATO-C4X-201114)
- Sodium Cromoglicate Impurity 19 (CAS CATO-C4X-201119)
- Sodium Cromoglicate Impurity 20 (CAS CATO-C4X-201120)
- Sodium Cromoglicate Impurity 18 (CAS CATO-C4X-201118)
- Sodium Cromoglicate Impurity 27 (CAS CATO-C4X-201127)
- Sodium Cromoglicate Impurity 11 (CAS 16110-51-3)
- Sodium Cromoglicate Impurity 3 (CAS CATO-C4X-20113)
- Sodium Cromoglicate Impurity 5 (CAS CATO-C4X-20115)
Recommended Standards
- Doxycycline EP Impurity B (CAS CATO-C4X-19312)
- Oxytetracycline EP Impurity E (CAS 18751-99-0)
- Minocycline Impurity 63 (CAS CATO-C4X-169963)
- Oxytetracycline EP impurity F(Anhydrooxytetracycline) (CAS 4660-26-8)
- Cetirizine EP Impurity F(2HCl) (CAS 83881-54-3)
- Rosuvastatin Impurity 261 (CAS CATO-C4X-1169261)
- S-Elagolix Impurity 59 (CAS 830346-51-5)
- 5-(4-fluorophenyl)-4-methylthiophene-2-carboxamide (CAS 1311587-17-3)
- (2-Isopropoxy-2-oxo-ethyl)-triphenyl-phosphonium;chloride (CAS 104718-15-2)
- 2-{[3-(4-chlorophenyl)-4-oxo-3,4-dihydroquinazolin-2-yl]sulfanyl}acetohydrazide (CAS 133764-45-1)
- Bis(trimethylsilyl)peroxide (CAS 17043-05-9)
- Candesartan Cilexetil Impurity 21 (CAS CATO-C4X-123421)
- (αR)-N-Methyl-α-(methylamino)-benzenepropanamide (CAS 193150-11-7)
- Endo-Gly29-Tirzepatide (CAS CATO-CPTD788685)
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