Norfloxacin EP Impurity I CAS CATO-C4X-14689
| CAS No. | CATO-C4X-14689 |
| Molecular Formula | C19H22ClN3O5 |
| Molecular Weight | 407.85 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Norfloxacin EP Impurity I (C19H22ClN3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Norfloxacin EP Impurity I (CAS CATO-C4X-14689), a pharmacopoeial impurity reference standard (molecular formula C19H22ClN3O5, MW 407.85 g/mol) used for the identification and quantification of trace impurities in APIs.
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 Norfloxacin EP Impurity I 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 | C19H22ClN3O5 |
| Molecular Weight | 407.85 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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 | Cl-containing |
| Nitrogen Atoms | 3 |
Related Norfloxacin Standards
- Norfloxacin Impurity 56 (CAS CATO-C4X-146856)
- Norfloxacin Impurity 41 (CAS CATO-C4X-146841)
- Norfloxacin Impurity 51 (CAS CATO-C4X-146851)
- Norfloxacin Impurity 20 (CAS CATO-C4X-146820)
- Norfloxacin Impurity 62 (CAS CATO-C4X-146862)
- Norfloxacin EP Impurity H (CAS 105440-01-5)
- Norfloxacin Impurity 21 (CAS 103240-27-3)
- Norfloxacin Impurity 54 (CAS CATO-C4X-146854)
Recommended Standards
- 5-((4-Chlorophenyl)sulfonyl)-4-(4-fluorophenoxy)-N,N-dimethylpyrimidin-2-amine (CAS 478247-37-9)
- 2-(4-(4-Chlorophenylsulfonyl)-4-(2,5-difluorophenyl)cyclohexylidene)acetonitrile (CAS 656810-84-3)
- 2-Chloro-4-(dibenzo[b,d]furan-3-yl)-6-(naphthalen-2-yl)-1,3,5-triazine (CAS 2226747-69-7)
- 5-Chloro-N-[2-oxo-3-[[4-(3-oxo-4-morpholinyl)phenyl]amino]propyl]-2-thiophenecarboxamide (CAS 1161719-52-3)
- Meropenem EP Impurity A (CAS 1053703-36-8)
- Cobicistat impurity 7 (CAS 1004316-93-1)
- Betamethasone impurity 61 (CAS 1257544-84-5)
- n-(2-Methylcyclohexyl)-3-(pyrrolidin-1-yl)aniline (CAS 1184268-55-0)
- Ethyl 2-(tetrahydro-2H-pyran-4-yl)pyrimidine-5-carboxylate (CAS 1447607-86-4)
- VU590 DiHCl (CAS 313505-85-0)
- 2-(4-Isopropoxyphenyl)-5-(2-oxo-1-propylindolin-3-ylidene)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 371130-01-7)
- 3-Pyridin-3-yl-morpholine dihydrochloride (CAS 1331957-59-5)
- 1-((2,2-Difluorocyclopropyl)methyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 2101930-90-7)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
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