Norfloxacin Impurity 5 CAS 139445-58-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 139445-58-2 |
| Molecular Formula | C21H18N6O6 |
| Molecular Weight | 450.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity Norfloxacin Impurity 5 (CAS 139445-58-2) pharmaceutical standards reference standard. Molecular formula: C21H18N6O6. Molecular weight: 450.40 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C21H18N6O6 |
| Molecular Weight | 450.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 6 |
Related Norfloxacin Standards
- Norfloxacin Impurity 40 (CAS CATO-C4X-146840)
- Norfloxacin Impurity 46 (CAS CATO-C4X-146846)
- Norfloxacin Impurity 6 (CAS 126192-88-9)
- Norfloxacin EP Impurity I (CAS CATO-C4X-14689)
- Norfloxacin-acyl-β-glucuronide (CAS 1260617-45-5)
- Norfloxacin Impurity 56 (CAS CATO-C4X-146856)
- Norfloxacin Impurity 41 (CAS CATO-C4X-146841)
- Norfloxacin Impurity 51 (CAS CATO-C4X-146851)
Recommended Standards
- 2-Iodo-2,4,6-triisopropyl-3-methoxy-6-methylbiphenyl (CAS 1351403-03-6)
- 2,13-Dinitro-6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine (CAS 32082-45-4)
- Furan-2-thiol (CAS 13129-35-6)
- 1-Butyl-2-imino-10-methyl-3-tosyl-1H-dipyrido[1,2-a:2',3'-d]pyrimidin-5(2H)-one (CAS 606961-68-6)
- D-erythro-Sphingosine-1-phosphate (CAS 26993-30-6)
- Ethyl (6-(benzylamino)-7-nitrobenzo[c][1,2,5]oxadiazol-4-yl)glycinate (CAS 487035-65-4)
- 4-Bromo-2-fluoro-3-methylbenzoic acid (CAS 194804-90-5)
- Methyl 2-(3-cyano-4-nitrophenyl)-2-(2-methoxyphenyl)acetate (CAS 1980045-02-0)
- (2-Fluorophenethyl)hydrazine (CAS 32607-85-5)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
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