| CAS No. | 183905-31-9 |
| Molecular Formula | C7H12ClNO3 |
| Molecular Weight | 193.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 193.63 g/mol gives Linezolid Impurity 77 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Linezolid Impurity 77 (CAS 183905-31-9), a pharmacopoeial impurity reference standard (molecular formula C7H12ClNO3, MW 193.63 g/mol) used for the identification and quantification of trace impurities in APIs.
Linezolid Impurity 77 (C7H12ClNO3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Linezolid Impurity 77 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.
| Molecular Formula | C7H12ClNO3 |
| Molecular Weight | 193.63 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2009 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |