Cefaclor Impurity 23 CAS 1426173-90-1
| CAS No. | 1426173-90-1 |
| Molecular Formula | - |
| Molecular Weight | 372.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C15H9D5ClN3O4S, Cefaclor Impurity 23 contains deuterium isotope labeling, 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 372.84 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.
As a process- or degradation-related impurity, Cefaclor Impurity 23 (CAS 1426173-90-1, C15H9D5ClN3O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
As a certified reference material (CRM), Cefaclor Impurity 23 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H9D5ClN3O4S |
| Molecular Weight | 372.84 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefaclor Standards
- Cefaclor Impurity C37 (CAS 53994-83-5)
- Cefaclor (CAS 53994-73-3)
- Cefaclor Impurity 15 (CAS CATO-C4X-127015)
- Cefaclor EP Impurity C (CAS 143059-69-2)
- Cefaclor EP Impurity D (Mixture of Diastereomers) (CAS 152575-13-8)
- Cefaclor Diketopiperazine (CAS CATO-C4X-127051)
- Cefaclor Impurity 54 (CAS CATO-C4X-127054)
- Cefaclor Impurity 64 (CAS CATO-C4X-127064)
Recommended Standards
- 4-(Tribromomethyl)benzoic acid (CAS 5278-92-2)
- Landiolol Impurity 47 (CAS CATO-C4X-262147)
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- 2,4,6-Tribromophenyl Acetate (CAS 607-95-4)
- Lidocaine Impurity 100 (CAS CATO-C4X-1679100)
- Ticagrelor Impurity 184 (R)-Mandelate (CAS 2673270-21-6)
- Bedaquiline Impurity N21 (CAS 1298044-25-3)
- 4-Bromo-3,3,4,4-tetrafluorobutyl (2,2,3,3,3-pentafluoropropyl) carbonate (CAS 1923267-05-3)
- (5-Fluoro-2-((4-methylpiperidin-1-yl)methyl)phenyl)boronic acid (CAS 1332505-87-9)
- 1-(Hydroxymethyl)cycloheptane-1-carbonitrile (CAS 1506467-98-6)
- Thevetiaflavone (CAS 29376-68-9)
- Cytarabine hydrochloride (CAS 69-74-9)
- ethyl 4-bromo-5-methyl-1h-pyrrole-2-carboxylate (CAS 25907-29-3)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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