Naltrexone Impurity 67 CAS CATO-C4X-147567
| CAS No. | CATO-C4X-147567 |
| Molecular Formula | C20H23NO6 |
| Molecular Weight | 373.40 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.
CATO supplies Naltrexone Impurity 67 (CAS CATO-C4X-147567), a pharmacopoeial impurity reference standard (molecular formula C20H23NO6, MW 373.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H23NO6, Naltrexone Impurity 67 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 373.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H23NO6 |
| Molecular Weight | 373.40 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 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 30 (CAS 112242-13-4)
- Naltrexone impurity 45 (CAS CATO-C4X-147545)
- Naltrexone impurity 33 (CAS CATO-C4X-147533)
- Naltrexone impurity 35 (CAS CATO-C4X-147535)
- Naltrexone Impurity 14 (CAS 96445-13-5)
- Naltrexone impurity 50 (CAS CATO-C4X-147550)
- Naltrexone impurity 47 (CAS CATO-C4X-147547)
- Naltrexone impurity 48 (CAS CATO-C4X-147548)
Recommended Standards
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