Naltrexone Impurity 68 CAS 207732-98-7
| CAS No. | 207732-98-7 |
| Molecular Formula | C21H22N2O3 |
| Molecular Weight | 350.41 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 Naltrexone Impurity 68.
Naltrexone Impurity 68 (CAS 207732-98-7) is a certified pharmaceutical impurity reference standard with the molecular formula C21H22N2O3 and a molecular weight of 350.41 g/mol.
Based on its molecular formula C21H22N2O3, Naltrexone Impurity 68 contains a steroid 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 350.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Naltrexone Impurity 68 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 | C21H22N2O3 |
| Molecular Weight | 350.41 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2016 |
| Nitrogen Atoms | 2 |
Related Naltrexone Standards
- Naltrexone impurity 41 (CAS CATO-C4X-147541)
- Naltrexone EP Impurity I (CAS 96445-14-6)
- Naltrexone-D4 (CAS 2070009-29-7)
- Naltrexone EP Impurity J (CAS 16617-07-5)
- Naltrexone Impurity 16 (CAS CATO-C4X-147516)
- Naltrexone Impurity N4 (CAS 16676-33-8)
- Naltrexone-D3 (CAS 1261080-26-5)
- Naltrexone Impurity 19 (CAS 112269-62-2)
Recommended Standards
- Warfarin Impurity 17 (CAS CATO-C4X-142917)
- Loxoprofen impurity 116 (CAS CATO-C4X-1488116)
- Avibactam Impurity 140 (CAS CATO-C4X-1348140)
- Loxoprofen Impurity 133 (CAS CATO-C4X-1488133)
- Vortioxetine Impurity 52 (CAS 1928741-88-1)
- Formoterol Impurity 63 (CAS 67346-59-2)
- Rtitrexed Impurity 28 (CAS CATO-C4X-138628)
- Delamanid Impurity 2 (CAS CATO-C4X-25142)
- 4-(propylsulfanyl)benzoic acid (CAS 22683-48-3)
- N-(2-{[(3-methyloxetan-3-yl)methyl]amino}ethyl)acetamide (CAS 1343276-34-5)
- 3-Bromophenyl trifluoroacetate (CAS 59935-55-6)
- 3-(1-(1,1-Dioxidotetrahydrothiophen-3-yl)-3,5-dimethyl-1H-pyrazol-4-yl)propanoic acid hydrochloride (CAS 1881329-15-2)
- Butanedioic acid, 2-sulfo-, 1,4-bis(1-methylheptyl) ester, sodium salt (CAS 20727-33-7)
- Tau Peptide (273-284) trifluoroacetate salt (CAS 1663490-91-2)
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