Enoxacin Impurity 4 CAS 87939-21-7
| CAS No. | 87939-21-7 |
| Molecular Formula | C13H15FN4O3 |
| Molecular Weight | 294.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 294.28 g/mol gives Enoxacin Impurity 4 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Enoxacin Impurity 4 (CAS 87939-21-7, C13H15FN4O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Enoxacin Impurity 4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 294.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Enoxacin Impurity 4 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 | C13H15FN4O3 |
| Molecular Weight | 294.28 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, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Enoxacin Standards
Recommended Standards
- Ampicillin Impurity 81 (CAS CATO-C4X-144381)
- Ethyl 2-(pyrrolidin-1-yl)-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 1000339-79-6)
- Lenvatinib Impurity 39 (CAS CATO-C4X-114039)
- 6-Phenyl-4-(trifluoromethyl)thieno[2,3-b]pyridin-3-amine (CAS 104960-57-8)
- Vitamin K1 Impurity 54 (CAS CATO-C4X-220754)
- Buspirone Impurity 42 (CAS CATO-C4X-125842)
- Barloxavir impurity 83 (CAS 157652-27-2)
- tert-Butyl (6-(piperazin-1-yl)hexyl)carbamate (CAS 1309777-63-6)
- 1-(4-tert-butylphenyl)tetrahydrothiophen-1-ium;trifluoromethanesulfonate (CAS 220155-95-3)
- rel-(3R,4S)-3-Cyclopropyl-4-(hydroxymethyl)-1-(4-methoxybenzyl)-2-oxopyrrolidine-3-carbonitrile (CAS 1891013-86-7)
- 2-Amino-N-((2S)-2-(benzyl(isopropyl)amino)cyclohexyl)propanamide (CAS 1354032-75-9)
- alfa-Avoparcin (CAS 73957-86-5)
- 4-(2-Sulfanyl-1h-imidazol-1-yl)-n-(thiophen-2-ylmethyl)benzamide (CAS 1146289-96-4)
- Liraglutide (14-31)TFA Salt (CAS CATO-C4X-19927)
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