Choline Fenofibrate EP Impurity A CAS 42019-78-3
| CAS No. | 42019-78-3 |
| Molecular Formula | C13H9ClO2 |
| Molecular Weight | 232.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 232.66 g/mol gives Choline Fenofibrate EP Impurity A distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Choline Fenofibrate EP Impurity A (CAS 42019-78-3) is a certified pharmaceutical impurity reference standard with the molecular formula C13H9ClO2 and a molecular weight of 232.66 g/mol.
Based on its molecular formula C13H9ClO2, Choline Fenofibrate EP Impurity A contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 232.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Choline Fenofibrate EP Impurity A 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 | C13H9ClO2 |
| Molecular Weight | 232.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Cl-containing |
Related Choline Standards
- Choline Fenofibrate Impurity 1 (CAS 2985-79-7)
- Choline impurity 10 (CAS CATO-C4X-158710)
- Choline Fenofibrate Impurity 13 (CAS 134612-84-3)
- Choline fenofibrate Impurity 24 (CAS 51368-55-9)
- Choline p-Toluenesulfonate Salt (CAS 55357-38-5)
- Choline impurity 3 (CAS 19249-04-8)
- Choline fenofibrate Impurity 23 (CAS 154356-97-5)
- Choline O-sulfate - (CAS 4858-96-2)
Recommended Standards
- Ethyl 4-(chloromethyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 54449-02-4)
- 6-Chloro-2-phenylbenzoic acid (CAS 97027-46-8)
- Fenofibrate Impurity 5 (CAS 62810-39-3)
- 6-(2-Chlorophenyl)nicotinic Acid (CAS 505082-72-4)
- Loxoprofen Impurity 145 (CAS 2274853-20-0)
- Sitagliptin Impurity 172 (CAS CATO-C4X-1144172)
- Nortriptyline EP Impurity B (CAS 303-50-4)
- 1-(But-3-en-1-yl)-3-chlorobenzene (CAS 91426-46-9)
- 2-((1-(Thiazol-2-yl)ethyl)amino)cyclohexan-1-ol (CAS 1342514-45-7)
- 3-ethyl-5-methylfuran-2-carboxylic acid (CAS 106950-12-3)
- 4-Bromo-2-(methylsulfonyl)benzoic Acid (CAS 142994-02-3)
- 1-Bromo-2-(dimethoxymethyl)-3-fluorobenzene (CAS 1393442-56-2)
- 2-Cyano-N-(2,5-dibromophenyl)-3-hydroxy-2-butenamide (CAS 62004-35-7)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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