Sodium Cromoglicate Impurity 22 CAS CATO-C4X-201122
| CAS No. | CATO-C4X-201122 |
| Molecular Formula | C33H20O15 |
| Molecular Weight | 656.50 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 22 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 656.50 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).
Sodium Cromoglicate Impurity 22 (CAS CATO-C4X-201122) is a certified pharmaceutical impurity reference standard with the molecular formula C33H20O15 and a molecular weight of 656.50 g/mol.
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), Sodium Cromoglicate Impurity 22 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 | C33H20O15 |
| Molecular Weight | 656.50 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) | 24.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Sodium Standards
- Cromoglicate Lisetil (CAS 110816-79-0)
- Sodium Cromoglicate Impurity 16 (CAS CATO-C4X-201116)
- Sodium Cromoglicate Impurity 26 (CAS CATO-C4X-201126)
- 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)
- Sodium Cromoglicate Impurity 15 (CAS 149992-30-3)
Recommended Standards
- [1,2,3-13C3]6'-Sialyllactose Sodium SaltDISCONTINUED (CAS 74609-39-5)
- 2-Bromo-6-[2-bromo-4-(2-ethylhexyl)-4,5-dihydro-5-oxo-6H-thieno[3,2-b]pyrrol-6-ylidene]-4-(2-ethylhexyl)-4,6-dihydro-5H-thieno[3,2-b]pyrrol-5-one (CAS 1147124-49-9)
- 5’-O-DMTr-5-iodo-2’-deoxyuridine (CAS 104375-88-4)
- 1,1’-[(1S,2S)-Cyclohexane-1,2-diyl]bis[3-[3,5-bis(trifluoromethyl)phenyl]thiourea] (CAS 1140969-69-2)
- Fluticasone Impurity 113 (CAS CATO-C4X-1650113)
- Tegoprazan Impurity 93 (CAS CATO-C4X-229793)
- Fludarabine Phosphate EP Impurity B (CAS 149297-79-0)
- 3-(Bromomethyl)-2-methoxy-6-methylpyridine (CAS 1227594-67-3)
- 4-Amino-2-(methylsulfonyl)pyrimidine-5-carbonitrile (CAS 98198-13-1)
- 4-Fluoroisoquinolin-8-amine (CAS 1841081-81-9)
- 3'-(P-tolyl)spiro[indene-2,2'-oxiran]-1(3H)-one (CAS 54763-67-6)
- 4-Cyclopropoxy-N-methyl-5-sulfamoylnicotinamide (CAS 1243462-09-0)
- 5-Bromo-2-(2-fluorophenyl)pyridine (CAS 918305-20-1)
- Hexapeptide-11 (CAS 161258-30-6)
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