Naltrexone Impurity 61 CAS CATO-C4X-147561
| CAS No. | CATO-C4X-147561 |
| Molecular Formula | C20H23NO5 |
| Molecular Weight | 357.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Naltrexone Impurity 61 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.
Naltrexone Impurity 61 (CAS CATO-C4X-147561) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23NO5 and a molecular weight of 357.40 g/mol.
Structurally, Naltrexone Impurity 61 (C20H23NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 357.40 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C20H23NO5 |
| Molecular Weight | 357.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°C, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Naltrexone Standards
- Naltrexone Impurity 19 (CAS 112269-62-2)
- Naltrexone EP Impurity F (CAS 2397651-97-5)
- Naltrexone EP Impurity G (CAS CATO-C4X-14757)
- Naltrexone impurity 56 (CAS CATO-C4X-147556)
- Naltrexone EP Impurity J (CAS 16617-07-5)
- Naltrexone Impurity 16 (CAS CATO-C4X-147516)
- Naltrexone Impurity N4 (CAS 16676-33-8)
- Naltrexone Impurity 29 (CAS CATO-C4X-147529)
Recommended Standards
- Naloxone Impurity 22 (CAS CATO-C4X-149322)
- Ketoprofen Impurity 94 (CAS CATO-C4X-147194)
- Ketorolac impurity 64 (CAS 141031-78-9)
- Ketoprofen Impurity 93 (CAS 2733641-85-3)
- Remdesivir Impurity 45 (CAS 1911578-99-8)
- Edoxaban Impurity 23 (CAS 2605225-72-5)
- Posaconazole impurity 234 (CAS CATO-C4X-1208234)
- Calcium Folinate EP Impurity B (Mixture of Diastereomers) (CAS 98814-60-9)
- 4-(3-Aminopropyl)-4,5-dihydro-1h-pyrazol-5-one (CAS 7032-17-9)
- 1H-Pyrazol-4-amine, 1-(2-propyn-1-yl)- (CAS 1215991-64-2)
- m-PEG10-acid (CAS 2409969-94-2)
- 2-(Pyrrolidin-1-yl)pyrimidine-4-carboxylic acid hydrate (CAS 1423033-40-2)
- Trimethylamine oxide hydrate (CAS 136449-78-0)
- Insulin Degludec impurity 4 (CAS CATO-C4X-21574)
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