Olopatadine lmpurity 58 CAS CATO-C4X-171858
| CAS No. | CATO-C4X-171858 |
| Molecular Formula | C19H16O3 |
| Molecular Weight | 292.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Olopatadine lmpurity 58 (CAS CATO-C4X-171858) is a certified pharmaceutical impurity reference standard with the molecular formula C19H16O3 and a molecular weight of 292.33 g/mol.
Structurally, Olopatadine lmpurity 58 (C19H16O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 292.33 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Olopatadine lmpurity 58 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 | C19H16O3 |
| Molecular Weight | 292.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Olopatadine Standards
- Olopatadine Impurity 66 (CAS CATO-C4X-171866)
- Olopatadine Impurity 18 (CAS 55453-90-2)
- Olopatadine Impurity 20 (CAS 962-95-8)
- Olopatadine Impurity 28 (CAS 55453-89-9)
- Olopatadine Impurity 26 (CAS 55690-18-1)
- Olopatadine Impurity 25 (CAS 88630-37-9)
- Olopatadine Impurity 37 (CAS 55689-64-0)
- Olopatadine Carbaldehyde (CAS CATO-C4X-171815)
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