Norfloxacin Impurity 19 CAS 74011-42-0
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 74011-42-0 |
| Molecular Formula | C16H16FN3O4 |
| Molecular Weight | 333.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Norfloxacin Impurity 19 (CAS 74011-42-0) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C16H16FN3O4. Molecular weight: 333.31 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C16H16FN3O4 |
| Molecular Weight | 333.31 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 |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Norfloxacin Standards
- Norfloxacin Impurity 8 (CAS 75001-83-1)
- Norfloxacin Impurity 37 (CAS CATO-C4X-146837)
- Norfloxacin Impurity 31 (CAS CATO-C4X-146831)
- Norfloxacin Impurity 39 (CAS CATO-C4X-146839)
- Norfloxacin Impurity 67 (CAS CATO-C4X-146867)
- Norfloxacin Impurity 50 (CAS CATO-C4X-146850)
- Norfloxacin Piperazinyl-1-Oxide (CAS 1796931-70-8)
- Norfloxacin Impurity 22 (CAS 109142-49-6)
Recommended Standards
- Retigabine impurity 13 (CAS CATO-C4X-13153)
- Lomefloxacin Impurity 8 (CAS 195259-12-2)
- Regorafenib Impurity 23 (CAS CATO-C4X-104723)
- Papaverine EP Impurity B (Papaverinol) (CAS 482-76-8)
- Vildagliptin Impurity 69 (CAS CATO-C4X-110069)
- 4-(2-(Quinolin-2-yl)vinyl)aniline (CAS 108165-95-3)
- 2-(3-Nitrophenyl)propan-2-amine (CAS 1030137-68-8)
- 1-(4-(4-(2-Phenyl-2H-tetrazole-5-carbonyl)piperazin-1-yl)phenyl)ethan-1-one (CAS 1396877-77-2)
- 2-Bromo-1-fluoro-5-methyl-3-nitrobenzene (CAS 1807212-21-0)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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 13829788188 / jacky.chen@cato-chem.com