Pefloxacin Impurity 2 CAS CATO-C4X-23332
| CAS No. | CATO-C4X-23332 |
| Molecular Formula | C14H13ClFNO3 |
| Molecular Weight | 297.71 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.
CATO supplies Pefloxacin Impurity 2 (CAS CATO-C4X-23332), a pharmacopoeial impurity reference standard (molecular formula C14H13ClFNO3, MW 297.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Pefloxacin Impurity 2 (C14H13ClFNO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a certified reference material (CRM), Pefloxacin Impurity 2 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 | C14H13ClFNO3 |
| Molecular Weight | 297.71 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, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Pefloxacin Standards
- Pefloxacin Impurity 9 (CAS 125292-94-6)
- Pefloxacin Mesilate Dihydrate EP Impurity G (CAS 70458-94-5)
- Pefloxacin Mesilate Dihydrate EP Impurity E (CAS 879005-96-6)
- Pefloxacin EP Impurity H (CAS 106847-40-9)
- Pefloxacin Impurity 7 (CAS CATO-C4X-23337)
- Pefloxacin Impurity 8 (CAS CATO-C4X-23338)
- Pefloxacin-D5 (CAS 1228182-51-1)
- Pefloxacin Mesilate Dihydrate EP Impurity D (CAS 85145-21-7)
Recommended Standards
- (E)-3-nitrobenzaldehyde O-((2-chlorothiazol-5-yl)methyl) oxime (CAS 341967-83-7)
- Olaparib Impurity 94 (CAS CATO-C4X-113594)
- 2-(3-(4-Chlorophenyl)ureido)thiazole-4-carboxylic acid (CAS 941869-64-3)
- Ethyl 3-(2-chloro-6-fluorophenyl)-2-(isoxazol-5-yl)propanoate (CAS 477888-06-5)
- (1R,3r,5S)-Ipratropium Impurity 40 (CAS 99888-00-3)
- Allopurinol impurity 13 (CAS CATO-C4X-145813)
- Dronedarone Impurity 21 (CAS CATO-C4X-109221)
- 1-(5-bromothiophen-2-yl)cyclobutane-1-carbonitrile (CAS 1514316-53-0)
- N-methyl-2-(pyrrolidin-2-yl)pyrimidin-4-amine (CAS 1263378-74-0)
- 2,9-Dinitroanthracene (CAS 234076-75-6)
- 4,5-Dichloro-2-(hydroxymethyl)pyridazin-3(2H)-one (CAS 51355-97-6)
- 4-[(4-methylphenyl)sulfanyl]butanoic acid (CAS 18850-48-1)
- Methyl 4-hydroxy-2,6-dimethylbenzoate (CAS 83194-70-1)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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