| CAS No. | 89268-03-1 |
| Molecular Formula | C5H11ClO3 |
| Molecular Weight | 154.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 154.59 g/mol gives Roxithromycin Impurity 15 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Roxithromycin Impurity 15 (CAS 89268-03-1), a pharmacopoeial impurity reference standard (molecular formula C5H11ClO3, MW 154.59 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C5H11ClO3, Roxithromycin Impurity 15 contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 154.59 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.
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.
CATO manufactures Roxithromycin Impurity 15 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.
| Molecular Formula | C5H11ClO3 |
| Molecular Weight | 154.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |