Difloxacin EP Impurity G CAS 98105-79-4
| CAS No. | 98105-79-4 |
| Molecular Formula | C16H8ClF2NO3 |
| Molecular Weight | 335.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Difloxacin EP Impurity G (CAS 98105-79-4), a pharmacopoeial impurity reference standard (molecular formula C16H8ClF2NO3, MW 335.69 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H8ClF2NO3, Difloxacin EP Impurity G contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 335.69 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).
CATO manufactures Difloxacin EP Impurity G 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 | C16H8ClF2NO3 |
| Molecular Weight | 335.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Difloxacin Standards
Recommended Standards
- N-(5-chlorobenzo[d][1,3]dioxol-4-yl)-5,7-difluoroquinazolin-4-amine (CAS 893428-69-8)
- 8-Hydroxy-Efavirenz D4 (CAS 1217771-47-5)
- D-Mannopyranoside A (CAS 65446-24-4)
- N-(4-Chlorobenzyl)-3,5-dinitrobenzamide (CAS 446855-41-0)
- Metronidazole Impurity N30 (CAS 56910-52-2)
- Tirzepatide Impurity 16 (CAS CATO-C4X-324016)
- Esmolol Impurity 53 (CAS 5535-03-5)
- 1187163-55-8 Ethyl 5-(3-methylpyridin-2-yl)thiophene-2-carboxylate MFCD13152503 (CAS 1187163-55-8)
- 2-(3,3-Difluorocyclohexyl)-4-phenylpyridine (CAS 1241505-00-9)
- methyl 2-[4-(tert-butoxycarbonylamino)tetrahydropyran-4-yl]acetate (CAS 1108154-46-6)
- 2-(4-Ethoxy-3-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1005010-04-7)
- 4-Methylimidazole-d3 (CAS 1219805-95-4)
- Oct-1-en-1-ylboronic acid (CAS 214907-14-9)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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