Besifloxacin Impurity 3 CAS CATO-C4X-10043
| CAS No. | CATO-C4X-10043 |
| Molecular Formula | C19H22FN3O3 |
| Molecular Weight | 359.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Besifloxacin Impurity 3 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.
As a process- or degradation-related impurity, Besifloxacin Impurity 3 (CAS CATO-C4X-10043, C19H22FN3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Besifloxacin Impurity 3 (C19H22FN3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 359.39 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C19H22FN3O3 |
| Molecular Weight | 359.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Besifloxacin Standards
Recommended Standards
- Methyl 4-fluoro-3-(morpholinosulfonyl)benzo[b]thiophene-2-carboxylate (CAS 946300-74-9)
- Quinolone analog 12 (CAS 119914-61-3)
- Methyl 2-[4,5-dimethoxy-2-(morpholinosulfonyl)phenyl]acetate (CAS 343832-73-5)
- Enrofloxacin (CAS 93106-60-6)
- Rasagiline impurity 56 (CAS CATO-C4X-191356)
- Bumetanide Impurity 61 (CAS 94610-14-7)
- Enalapril Impurity 19 (CAS 15121-89-8)
- (R)-6-bromo-8-fluorochroman-4-amine (CAS 1212825-38-1)
- Rel-tert-butyl ((1s,3s)-3-(hydrazinecarbonyl)cyclobutyl)carbamate (CAS 1463522-61-3)
- 3-methyl-N-[2-(5-sulfamoylthiophen-2-yl)ethyl]butanamide (CAS 1094361-26-8)
- 6-(Trifluoromethoxy)-1,2,3,4-tetrahydroquinoline (CAS 212695-44-8)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-fluorophenyl)acetamide (CAS 477329-20-7)
- (R)-2-(1,3-Dioxoisoindolin-2-yloxy)-4-methylpentanoic acid (CAS 310404-45-6)
- D-γ-Glu20-Side-Tirzepatide (CAS CATO-CPTD788929)
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