Fosfomycin Impurity 76 CAS CATO-C4X-131676
| CAS No. | CATO-C4X-131676 |
| Molecular Formula | C3H8N2O3 |
| Molecular Weight | 120.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 120.11 g/mol gives Fosfomycin Impurity 76 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Fosfomycin Impurity 76 (CAS CATO-C4X-131676), a pharmacopoeial impurity reference standard (molecular formula C3H8N2O3, MW 120.11 g/mol) used for the identification and quantification of trace impurities in APIs.
Fosfomycin Impurity 76 (C3H8N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C3H8N2O3 |
| Molecular Weight | 120.11 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| Nitrogen Atoms | 2 |
Related Fosfomycin Standards
- Fosfomycin Impurity 45 (CAS 34163-96-7)
- Fosfomycin Impurity 74 (CAS 60630-17-3)
- Fosfomycin Impurity 78 (CAS 74178-02-2)
- Fosfomycin Enantiomer (CAS 26017-03-8)
- Fosfomycin Impurity 55 (CAS 50577-86-1)
- Fosfomycin Impurity 83 (CAS 6913-02-6)
- Fosfomycin Impurity 50 (CAS 53621-85-5)
- Fosfomycin Impurity 75 (CAS CATO-C4X-131675)
Recommended Standards
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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