Cefixime Impurity 97 CAS CATO-C4X-113997
| CAS No. | CATO-C4X-113997 |
| Molecular Formula | C22H27N3O10S |
| Molecular Weight | 525.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cefixime Impurity 97 is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Cefixime Impurity 97 (CAS CATO-C4X-113997), a pharmacopoeial impurity reference standard (molecular formula C22H27N3O10S, MW 525.53 g/mol) used for the identification and quantification of trace impurities in APIs.
Cefixime Impurity 97 (C22H27N3O10S) contains a flavonoid core, an amide group, a sulfone 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C22H27N3O10S |
| Molecular Weight | 525.53 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°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 | 3 |
| Sulfur Atoms | 1 |
Related Cefixime Standards
- Cefixime Impurity 98 (CAS CATO-C4X-113998)
- Cefixime Impurity 104 (CAS 101156-41-6)
- Cefixime Impurity 24 (CAS 79368-92-6)
- Cefixime Impurity 31 (CAS CATO-C4X-113931)
- Cefixime Impurity 68 (CAS CATO-C4X-113968)
- Cefixime Impurity 71 (CAS CATO-C4X-113971)
- Cefixime Impurity 112 (CAS CATO-C4X-1139112)
- Cefixime Impurity 75 (CAS CATO-C4X-113975)
Recommended Standards
- 2-Propenoic acid, 2,3-dichloropropyl ester, homopolymer (CAS 61879-15-0)
- 2,4-Dimethyl 5-[bis(phenylcarbamoyl)amino]-3-(2-methoxy-2-oxoethyl)thiophene-2,4-dicarboxylate (CAS 339020-08-5)
- Cefadroxil Impurity 31 (CAS CATO-C4X-122431)
- (1S,2R)-1-((3aR,4R,6R,7aS)-6-(methoxycarbonyl)-2-oxo-6-(phenylthio)hexahydro-4H-pyrano[3,4-d]oxazol-4-yl)propane-1,2,3-triyl triacetate (CAS 2416647-62-4)
- Azacitidine Impurity 52 (CAS 77172-20-4)
- Mirogabalin Impurity 99 (CAS CATO-C4X-292499)
- Valsartan Impurity 34 (CAS 151052-40-3)
- 3-Hydroxy-6-(hydroxymethyl)-2-{[4-(pyrimidin-2-yl)piperazin-1-yl]methyl}-4H-pyran-4-one (CAS 866019-66-1)
- Sucrose Octabenzoate (CAS 12738-64-6)
- 133367-32-5 7170AH C26H25N3O2 H-His(1-Mtt)-OH (CAS 133367-32-5)
- Methyl 2-(trifluoromethyl)imidazo[1,2-a]pyridine-8-carboxylate (CAS 1116691-30-5)
- Methyl 6-bromo-5-hydroxy-2-pyridinecarboxylate (CAS 170235-19-5)
- 1,3-Dimethyl-5-(3-(trifluoromethyl)phenoxy)-1H-pyrazole-4-carboxylic acid (CAS 446276-23-9)
- Gastric Inhibitory Polypeptide (6-30) amide (human) (CAS 1139691-72-7)
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