Cefprozil Impurity 59 CAS CATO-C4X-149259
| CAS No. | CATO-C4X-149259 |
| Molecular Formula | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefprozil Impurity 59 (CAS CATO-C4X-149259), a pharmacopoeial impurity reference standard (molecular formula C18H18N2O4S, MW 358.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H18N2O4S, Cefprozil Impurity 59 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 358.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Impurity 58 (CAS CATO-C4X-149258)
- Cefprozil Impurity 63 (CAS CATO-C4X-149263)
- Cefprozil Impurity 56 (CAS CATO-C4X-149256)
- Cefprozil Impurity 62 (CAS CATO-C4X-149262)
- Cefprozil Impurity 41 (CAS CATO-C4X-149241)
- Cefprozil Impurity 55 (CAS CATO-C4X-149255)
- Cefprozil Impurity N1(Z-Cefprozil) (CAS 121412-77-9)
- Cefprozil (CAS 92665-29-7)
Recommended Standards
- Omeprazole impurity 31 (CAS CATO-C4X-125531)
- Lemborexant Impurity 24 (CAS CATO-C4X-304224)
- Citalopram Impurity 65 (CAS CATO-C4X-110965)
- Lemborexant Impurity 47 (CAS CATO-C4X-304247)
- Penfluridol Impurity 13 (CAS CATO-C4X-353813)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
- Oxandrolone Impurity 2 (CAS 313047-21-1)
- benzyl 2-[bis(tert-butoxycarbonyl)amino]prop-2-enoate (CAS 1798715-69-1)
- 1-(Chloromethyl)-1,1,3,3,3-Pentamethyldisiloxane (CAS 17201-83-1)
- 2-(bromomethyl)-1-chloro-3-ethoxybenzene (CAS 329980-82-7)
- 2-(Pyridin-3-yl)imidazo[1,2-a]pyridine-6-carboxylic acid (CAS 1270936-29-2)
- 3-(3-Bromophenyl)-1-(2,4-dimethylphenyl)propan-1-one (CAS 898760-21-9)
- Ethyl 2-Methyloxazole-4-carboxylate (CAS 10200-43-8)
- Acetyl decapeptide-3 (CAS 935288-50-9)
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