| CAS No. | 34163-96-7 |
| Molecular Formula | C3H5O3P |
| Molecular Weight | 120.04 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Fosfomycin Impurity 45 (CAS 34163-96-7) is a certified pharmaceutical impurity reference standard with the molecular formula C3H5O3P and a molecular weight of 120.04 g/mol.
Based on its molecular formula C3H5O3P, Fosfomycin Impurity 45 contains a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 120.04 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
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), Fosfomycin Impurity 45 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 | C3H5O3P |
| Molecular Weight | 120.04 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.5 |
| CAS Registry Year (est.) | 1966 |