Linezolid Impurity 55 CAS 333753-71-2
| CAS No. | 333753-71-2 |
| Molecular Formula | C15H22FN3O3 |
| Molecular Weight | 311.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Linezolid Impurity 55 (CAS 333753-71-2, C15H22FN3O3) 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, Linezolid Impurity 55 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.35 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.
As a certified reference material (CRM), Linezolid Impurity 55 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 | C15H22FN3O3 |
| Molecular Weight | 311.35 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Linezolid Standards
- Linezolid Impurity 108 (CAS 333753-69-8)
- Linezolid Impurity 6 (CAS 333753-67-6)
- Linezolid Impurity 98 (CAS CATO-C4X-107398)
- Linezolid Impurity 9 (CAS 1219708-30-1)
- Linezolid Impurity 88 (CAS 431924-51-5)
- Linezolid Impurity 63 (CAS 348626-43-7)
- Linezolid Impurity 67 (CAS CATO-C4X-107367)
- Linezolid Impurity 29 (CAS 496031-57-3)
Recommended Standards
- 899710-13-5 5-[(Diethylamino)sulfonyl]-3-methyl-1-benzofuran-2-carboxylic acid MFCD03830775 (CAS 899710-13-5)
- N-(2,4-difluorophenyl)-2,4,6-trimethylbenzenesulfonamide (CAS 346696-71-7)
- Flumazenil Impurity 15 (CAS CATO-C4X-143215)
- N-(1,1-Dioxidotetrahydrothiophen-3-yl)-N-ethylbenzo[d][1,3]dioxole-5-carboxamide (CAS 898413-32-6)
- Minocycline impurity 75 (CAS 803616-67-3)
- Argatroban Impurity 114 (CAS CATO-C4X-1007114)
- Rivaroxaban impurity 175 (CAS CATO-C4X-1090175)
- Methomyl-Oxime (CAS 13749-94-5)
- 1-(4-methylphenyl)-5-(propan-2-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1017399-09-5)
- 4-(Pentafluoroethyl)benzene-1-sulfonyl chloride (CAS 884010-48-4)
- ((But-3-yn-1-yloxy)methyl)benzene (CAS 22273-77-4)
- 4,4'-(1,4-Phenylene)bis(1-butyl-2,6-diphenylpyridin-1-ium) tetrafluoroborate (CAS 121188-20-3)
- Ethyl 1-Benzylpiperidine-4-carboxylate (CAS 24228-40-8)
- Semaglutide impurity 88 (CAS CATO-C4X-222688)
Why CATO?
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