Cefaclor Impurity 56 CAS CATO-C4X-127056
| CAS No. | CATO-C4X-127056 |
| Molecular Formula | C19H18N4O5S2 |
| Molecular Weight | 446.50 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 446.50 g/mol gives Cefaclor Impurity 56 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cefaclor Impurity 56 (CAS CATO-C4X-127056) is a certified pharmaceutical impurity reference standard with the molecular formula C19H18N4O5S2 and a molecular weight of 446.50 g/mol.
Cefaclor Impurity 56 (C19H18N4O5S2) 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C19H18N4O5S2 |
| Molecular Weight | 446.50 g/mol |
| Purity | 97%+ |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Cefaclor Standards
- Cefaclor Impurity 69 (CAS CATO-C4X-127069)
- Cefaclor Impurity 30 (CAS CATO-C4X-127030)
- Cefaclor Impurity 61 (CAS CATO-C4X-127061)
- Cefaclor Impurity 70 (CAS CATO-C4X-127070)
- Cefaclor Ethyl Ester (CAS CATO-C4X-127052)
- Cefaclor Impurity 17 (CAS CATO-C4X-127017)
- Cefaclor Impurity 35 (CAS CATO-C4X-127035)
- Cefaclor EP Impurity H (CAS CATO-C4X-12708)
Recommended Standards
- Olaparib Impurity 7 (CAS CATO-C4X-11357)
- Ligagliptin impurity 105 (CAS CATO-C4X-1101105)
- Finerenone Impurity 142 (CAS CATO-C4X-2880142)
- Olmesartan Medoxomilum EP Impurity A (CAS 144689-24-7)
- Etelcalcetide Impurity 39 (CAS CATO-C4X-324739)
- Nelarabine Impurity 1 (CAS 20535-83-5)
- Eperisone impurity 9 (CAS CATO-C4X-22799)
- 3-(Piperidin-4-yl)imidazolidine-2,4-dione hydrochloride (CAS 1864052-02-7)
- tert-Butyl (4-(trifluoromethyl)phenyl)carbamate (CAS 141940-37-6)
- 1-(1H-Imidazol-1-yl)acetone hydrochloride (CAS 131394-02-0)
- 2-(Methylthio)benzo[d]thiazol-6-amine (CAS 25706-29-0)
- Terrylene (CAS 188-72-7)
- 2-(3-Chlorophenyl)ethane-1-sulfonyl chloride (CAS 728919-59-3)
- Immunstimulating Peptide, human (CAS 94773-24-7)
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