Cefaclor EP Impurity H CAS CATO-C4X-12708
| CAS No. | CATO-C4X-12708 |
| Molecular Formula | C23H21ClN4O5S |
| Molecular Weight | 500.95 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 500.95 g/mol gives Cefaclor EP Impurity H distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cefaclor EP Impurity H (CAS CATO-C4X-12708) is a certified pharmaceutical impurity reference standard with the molecular formula C23H21ClN4O5S and a molecular weight of 500.95 g/mol.
Based on its molecular formula C23H21ClN4O5S, Cefaclor EP Impurity H contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 500.95 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C23H21ClN4O5S |
| Molecular Weight | 500.95 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Cefaclor Standards
- Cefaclor Impurity 17 (CAS CATO-C4X-127017)
- Cefaclor Impurity 35 (CAS CATO-C4X-127035)
- Cefaclor Impurity 61 (CAS CATO-C4X-127061)
- Cefaclor Impurity 70 (CAS CATO-C4X-127070)
- Cefaclor Impurity 56 (CAS CATO-C4X-127056)
- Cefaclor Impurity 69 (CAS CATO-C4X-127069)
- Cefaclor Impurity 36 (CAS CATO-C4X-127036)
- Cefaclor Impurity 30 (CAS CATO-C4X-127030)
Recommended Standards
- 2-((5-((9-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)methyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 116989-80-1)
- Phenylglycyl Cefaclor (CAS CATO-C4X-127026)
- 2-((4-(2-Chlorophenyl)-3-cyano-6-phenylpyridin-2-yl)thio)-N-(3-nitrophenyl)acetamide (CAS 332162-77-3)
- 2-((4-(2-Chlorophenyl)-3-cyano-6-phenylpyridin-2-yl)thio)-N-(4-nitrophenyl)acetamide (CAS 332128-34-4)
- Benidipine Impurity 66 (CAS CATO-C4X-112066)
- Dacomitinib Impurity 22 (CAS 2250242-14-7)
- Oxyphenisatine Impurity 1 (CAS CATO-C4X-31741)
- METHYL 4-HYDROXY-6-METHYLNICOTINATE (CAS 1535221-58-9)
- 2-Amino-N-[2-(dimethylamino)ethyl]-3-phenylpropanamide dihydrochloride (CAS 1246172-89-3)
- 1-((1S,2R,4R,5S)-4-(Hydroxymethyl)-3,6-dioxabicyclo[3.1.0]hexan-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS 14486-22-7)
- {1-[(2-fluorophenyl)methyl]-1H-1,2,3-triazol-4-yl}methanol (CAS 1248399-78-1)
- trans-2-(4-aminophenoxy)cyclohexan-1-ol (CAS 1820572-44-8)
- tert-Butyl (3-(1-formylpyrrolidin-2-yl)pyridin-2-yl)(isopropyl)carbamate (CAS 1352509-54-6)
- Akt/SKG Substrate Peptide (CAS 276680-69-4)
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