Enrofloxacin EP Impurity C HCl CAS 138892-82-7 (Free Base)
| CAS No. | 138892-82-7 (Free Base) |
| Molecular Formula | C19H23N3O3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 377.87 g/mol gives Enrofloxacin EP Impurity C HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Enrofloxacin EP Impurity C HCl (CAS 138892-82-7 (Free Base)) is a certified pharmaceutical impurity reference standard with the molecular formula C19H23N3O3HCl and a molecular weight of 377.87 g/mol.
Based on its molecular formula C19H23N3O3HCl, Enrofloxacin EP Impurity C HCl contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 377.87 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Enrofloxacin EP Impurity C HCl 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 | C19H23N3O3 HCl |
| Molecular Weight | 377.87 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >85% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Enrofloxacin Standards
- Enrofloxacin Ethyl Ester (CAS 107884-19-5)
- Enrofloxacin Methyl Ester (CAS 107884-20-8)
- Enrofloxacin Hydrochloride (CAS 112732-17-9)
- Enrofloxacin-d5 (CAS 1173021-92-5)
- Enrofloxacin-d5 HI (ethyl-d5) (CAS 1219795-24-0)
- Enrofloxacin Impurity 12 (CAS 130579-27-0)
- Enrofloxacin EP Impurity F (CAS 131775-99-0)
- Enrofloxacin EP Impurity E (CAS 1369495-59-9)
Recommended Standards
- Albendazole Impurity 1 (CAS 22769-68-2)
- Doxorubicin Impurity 6 (CAS CATO-C4X-20336)
- Cefditoren Impurity 53 (CAS CATO-C4X-135853)
- 3-(tert-Butyl)-4-cyclopropoxy-2-fluoropyridine (CAS 1243444-83-8)
- 5,5-Bis(9-methyl-9H-carbazol-3-yl)-5H-cyclopenta[2,1-b:3,4-b']dipyridine (CAS 1359755-87-5)
- Epristeride Impurity 6 (CAS CATO-C4X-30086)
- 2-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine (CAS 2223041-89-0)
- 3-bromo-4-methyl-pyridine-2-carbonitrile (CAS 717843-45-3)
- 5-(2,6-Dichlorophenyl)imidazolidine-2,4-dione (CAS 64464-11-5)
- Neuropeptide Y (13-36) (human, rat) (CAS 122341-40-6)
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