Ozenoxacin Impurity 81 CAS CATO-C4X-279681
| CAS No. | CATO-C4X-279681 |
| Molecular Formula | C21H21N3O5 |
| Molecular Weight | 395.41 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 395.41 g/mol gives Ozenoxacin Impurity 81 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ozenoxacin Impurity 81 (CAS CATO-C4X-279681) is a certified pharmaceutical impurity reference standard with the molecular formula C21H21N3O5 and a molecular weight of 395.41 g/mol.
Structurally, Ozenoxacin Impurity 81 (C21H21N3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 395.41 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures Ozenoxacin Impurity 81 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H21N3O5 |
| Molecular Weight | 395.41 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Ozenoxacin Standards
- Ozenoxacin Impurity 34 (CAS 245765-55-3)
- Ozenoxacin Impurity 80 (CAS CATO-C4X-279680)
- Ozenoxacin Impurity 1 (CAS CATO-C4X-27961)
- Ozenoxacin Impurity 61 (CAS CATO-C4X-279661)
- Ozenoxacin Impurity 75 (CAS CATO-C4X-279675)
- Ozenoxacin Impurity 53 (CAS CATO-C4X-279653)
- Ozenoxacin Impurity 78 (CAS CATO-C4X-279678)
- Ozenoxacin Impurity 77 (CAS CATO-C4X-279677)
Recommended Standards
- Roxadustat Impurity 36 (CAS 2599284-47-4)
- Belumosudil Impurity 53 (CAS CATO-C4X-298853)
- Parecoxib Impurity 26 (CAS CATO-C4X-159126)
- Fmoc-Asp-allyl ester (CAS 144120-53-6)
- Posaconazole Impurity 130 (CAS CATO-C4X-1208130)
- Resmetirom Impurity 22 (CAS 125001-18-5)
- CAS CATO-C3D-262838 (CAS CATO-C3D-262838)
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- 2-(4-Chlorophenyl)-1H-benzo[d]imidazole (CAS 1019-85-8)
- Methyl 2-amino-2-(dimethoxyphosphoryl)acetate (CAS 89537-21-3)
- 3-Oxatricyclo[3.2.1.0,2,4]octane-6,7-diol (CAS 89921-51-7)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com