Minocycline Impurity 31 CAS CATO-C4X-169931
| CAS No. | CATO-C4X-169931 |
| Molecular Formula | C25H30N4O6 |
| Molecular Weight | 482.53 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 482.53 g/mol gives Minocycline Impurity 31 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Minocycline Impurity 31 (CAS CATO-C4X-169931) is a certified pharmaceutical impurity reference standard with the molecular formula C25H30N4O6 and a molecular weight of 482.53 g/mol.
Based on its molecular formula C25H30N4O6, Minocycline Impurity 31 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 482.53 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).
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.
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 | C25H30N4O6 |
| Molecular Weight | 482.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Minocycline Standards
- Minocycline Impurity 54 (CAS CATO-C4X-169954)
- Minocycline EP Impurity F (CAS 1075240-33-3)
- Minocycline impurity 74 (CAS 17779-50-9)
- Minocycline impurity 76 (CAS CATO-C4X-169976)
- Minocycline Impurity 33 (CAS CATO-C4X-169933)
- Minocycline Impurity 57 (CAS CATO-C4X-169957)
- Minocycline Impurity 66 (CAS CATO-C4X-169966)
- Minocycline Impurity 59 (CAS CATO-C4X-169959)
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