Olopatadine impurity 147 CAS CATO-C4X-1135147
| CAS No. | CATO-C4X-1135147 |
| Molecular Formula | C15H10O3 |
| Molecular Weight | 238.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Olopatadine impurity 147.
Olopatadine impurity 147 (CAS CATO-C4X-1135147) is a certified pharmaceutical impurity reference standard with the molecular formula C15H10O3 and a molecular weight of 238.24 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Olopatadine impurity 147 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 238.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Olopatadine impurity 147 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 | C15H10O3 |
| Molecular Weight | 238.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Olopatadine Standards
- Olopatadine Impurity 35 (CAS 89019-82-9)
- Olopatadine Impurity 30 (CAS 728-97-2)
- Olopatadine Impurity 46 (CAS 23560-66-9)
- Olopatadine lmpurity 57 (CAS CATO-C4X-171857)
- Olopatadine Impurity 12 (CAS 66801-40-9)
- Olopatadine USP Related Compound C (CAS 55453-87-7)
- Olopatadine Impurity 45 (CAS 834-25-3)
- Olopatadine Impurity 37 (CAS 55689-64-0)
Recommended Standards
- Neratinib Impurity 58 (CAS CATO-C4X-113458)
- Febuxostat Impurity 33 (CAS 100118-38-5)
- Apixaban Impurity 82 (CAS 2614-10-0)
- N-Nitroso Oxcarbazepine EP Impurity C (CAS CATO-C4X-116431)
- Nemonoxacin Impurity 27 (CAS 926279-65-4)
- Dabigatran Impurity 136 (CAS 1015167-27-7)
- Toremifene Impurity 12 (CAS CATO-C4X-139712)
- Rupatadine impurity 33 HCl (CAS CATO-C4X-102733)
- (4-Methoxy-naphthalen-1-yl)-acetic acid (CAS 15257-60-0)
- 1-Methoxy-4-methylpentan-2-ol (CAS 53892-33-4)
- 3,6-Dimethylpyrazine-2,5-diamine (CAS 98484-95-8)
- 5-chloro-1-(difluoromethyl)pyrazolo[4,3-b]pyridine (CAS 2468028-32-0)
- N-Cyclopentyl-4-methoxybenzamide (CAS 346720-43-2)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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