Cefaclor Impurity 9 CAS 6485-67-2
| CAS No. | 6485-67-2 |
| Molecular Formula | C8H10N2O |
| Molecular Weight | 150.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Cefaclor Impurity 9 (CAS 6485-67-2) is a certified pharmaceutical impurity reference standard with the molecular formula C8H10N2O and a molecular weight of 150.18 g/mol.
Based on its molecular formula C8H10N2O, Cefaclor Impurity 9 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 150.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H10N2O |
| Molecular Weight | 150.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Cefaclor Standards
- Cefaclor EP Impurity A (CAS 875-74-1)
- Cefaclor EP Impurity F (CAS 2882-18-0)
- Cefaclor Impurity 37 (CAS 21746-02-1)
- Cefaclor Impurity 57 (CAS CATO-C4X-127057)
- Cefaclor Degradation A Impurity(H-D-Phg-Gly-OH) (CAS 6453-64-1)
- Cefaclor Impurity 46 (CAS 134624-91-2&6453-64-1 (mixture))
- Cefaclor Impurity 11 (CAS 51795-31-4)
- Cefaclor Impurity 62 (CAS CATO-C4X-127062)
Recommended Standards
- Cefadroxil Impurity 17 (CAS 700-63-0)
- Pregabalin Impurity 115 (CAS CATO-C4X-1312115)
- N-Nitroso N-Benzyl Methyl Amine (CAS 937-40-6)
- Nikethamide Impurity 9 (CAS 41116-48-7)
- Prucalopride impurity 49 (CAS 566197-86-2)
- Tegoprazan Impurity 116 (CAS CATO-C4X-2297116)
- Tamoxifen EP Impurity A (CAS 13002-65-8)
- N-(4-Fluorophenyl)-6-nitroquinazolin-4-amine (CAS 691385-33-8)
- 3-(4,5-Dimethyl-1h-imidazol-2-yl)-pyridine (CAS 53316-50-0)
- tert-Butyl 4-((4-chloropyrimidin-2-yl)(methyl)amino)piperidine-1-carboxylate (CAS 1261233-28-6)
- 4-(1-Methyl-1h-pyrazol-5-yl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1172836-41-7)
- 5-Bromo-2-methyl-2,3-dihydro-1-benzofuran-3-one (CAS 126224-79-1)
- [3-(4-Methylpiperazine-1-carbonyl)phenyl]boronic acid (CAS 957103-93-4)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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