Linezolid Impurity 90 CAS CATO-C4X-107390
| CAS No. | CATO-C4X-107390 |
| Molecular Formula | C20H22F2N4O2 |
| Molecular Weight | 388.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Linezolid Impurity 90 (CAS CATO-C4X-107390) is a certified pharmaceutical impurity reference standard with the molecular formula C20H22F2N4O2 and a molecular weight of 388.41 g/mol.
The molecular framework of Linezolid Impurity 90 (C20H22F2N4O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H22F2N4O2 |
| Molecular Weight | 388.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Linezolid Standards
- Linezolid Impurity 89 (CAS CATO-C4X-107389)
- Linezolid Impurity 12 (CAS 1215006-11-3)
- Linezolid Impurity 72 (CAS 2512195-95-6)
- Linezolid Impurity 79 (CAS 874340-08-6)
- Linezolid impurity 27 (CAS 858344-36-2)
- Linezolid Impurity 22 (CAS 174649-09-3)
- Linezolid Impurity 28 (CAS CATO-C4X-107328)
- Linezolid Impurity 91 (CAS CATO-C4X-107391)
Recommended Standards
- Trachelogenin (CAS 34209-69-3)
- Nimodipine Impurity 34 (CAS CATO-C4X-138534)
- Suksdorfin (CAS 53023-17-9)
- Nicardipine Impurity 31 (CAS CATO-C4X-171031)
- Indacaterol Impurity 16 (CAS CATO-C4X-150016)
- Miconazole EP Impurity F (CAS 27220-35-5)
- Roxadustat Impurity 65 (CAS CATO-C4X-221365)
- 4-[(2-phenylethyl)amino]butanoic acid hydrochloride (CAS 57054-99-6)
- 1-(Bromomethyl)-1-(trifluoromethyl)cyclopentane (CAS 2091636-18-7)
- (R)-3-(2-Hydroxypropyl)-5-methoxy-2-methylcyclohexa-2,5-diene-1,4-dione (CAS 190895-96-6)
- Methyl 4-cyclohexyl-3-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-7-carboxylate (CAS 1713174-85-6)
- 2-(Hydroxymethyl)-4-propylphenol (CAS 29922-45-0)
- Methyl 6-methyl-4-oxo-1,4-dihydropyridine-3-carboxylate (CAS 1073160-07-2)
- Des-Ala35-Tirzepatide (CAS CATO-CPTD788939)
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