Nemonoxacin Impurity 71 CAS 1203651-06-2
| CAS No. | 1203651-06-2 |
| Molecular Formula | C18H28N2O2 |
| Molecular Weight | 304.43 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.
Nemonoxacin Impurity 71 (CAS 1203651-06-2) is a certified pharmaceutical impurity reference standard with the molecular formula C18H28N2O2 and a molecular weight of 304.43 g/mol.
The molecular framework of Nemonoxacin Impurity 71 (C18H28N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Nemonoxacin Impurity 71 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 | C18H28N2O2 |
| Molecular Weight | 304.43 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Nemonoxacin Standards
- Nemonoxacin Impurity 28 (CAS 951163-63-6)
- Nemonoxacin Impurity 25 (CAS 221221-15-4)
- Nemonoxacin impurity 108 (CAS CATO-C4X-3128108)
- Nemonoxacin Impurity 40 (CAS CATO-C4X-312840)
- Nemonoxacin impurity 105 (CAS 656234-57-0)
- Nemonoxacin Impurity 24 (CAS CATO-C4X-312824)
- Nemonoxacin Impurity 100 (CAS CATO-C4X-3128100)
- Nemonoxacin Impurity 98 (CAS 926279-66-5)
Recommended Standards
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- Suvorexant impurity 27 (CAS CATO-C4X-181227)
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- Olprinone impurity 33 (CAS 116355-20-5)
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- 2-Propanone,1,1,1,3,3,3-hexabromo- 23162-64-3 CTK4F1011 (CAS 23162-64-3)
- 2-Fluoro-3-iodobenzonitrile (CAS 211943-27-0)
- Ethyl 6-methylmorpholine-2-carboxylate (CAS 2092520-02-8)
- Heptapeptide-6 (CAS CATO-CPTD788823)
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