Isavuconazole impurity 71 CAS CATO-C4X-1236171
| CAS No. | CATO-C4X-1236171 |
| Molecular Formula | C12H11F2N3O |
| Molecular Weight | 251.23 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.
Isavuconazole impurity 71 (CAS CATO-C4X-1236171) is a certified pharmaceutical impurity reference standard with the molecular formula C12H11F2N3O and a molecular weight of 251.23 g/mol.
Structurally, Isavuconazole impurity 71 (C12H11F2N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 251.23 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C12H11F2N3O |
| Molecular Weight | 251.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Isavuconazole Standards
- Isavuconazole Impurity 103 (CAS CATO-C4X-1236103)
- Isavuconazole Impurity 104 (CAS 2922040-42-2)
- Isavuconazole Impurity 105 (CAS CATO-C4X-1236105)
- Isavuconazole Impurity 129 (CAS 2122222-15-3)
- Isavuconazole Impurity 195 (CAS CATO-C4X-1236195)
- Isavuconazole Impurity 221 (CAS 1062201-83-5)
- Isavuconazole Impurity 43 (CAS CATO-C4X-123643)
- Isavuconazole Impurity 222 (CAS CATO-C4X-1236222)
Recommended Standards
- Efinaconazole Impurity 14 (CAS 135270-10-9)
- Efinaconazole Impurity 15 (CAS 135270-07-4)
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- Efinaconazole Impurity 16 (CAS CATO-C4X-124316)
- Ibrutinib Impurity 158 (CAS CATO-C4X-1064158)
- Vilanterol Impurity 56 (CAS CATO-C4X-193556)
- Dacomitinib Impurity 24 (CAS CATO-C4X-208624)
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- 4-pyridylboronic acid pinacol ester (CAS 181219-01-2)
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- 6-Methoxy-7-methyl-1,2,3,4-tetrahydro-1,5-naphthyridine (CAS 1820716-83-3)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
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