Cefmenoxime Impurity 8 CAS CATO-C4X-14778
| CAS No. | CATO-C4X-14778 |
| Molecular Formula | C26H27N15O7S5 |
| Molecular Weight | 821.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefmenoxime Impurity 8 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 821.91 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Cefmenoxime Impurity 8 (CAS CATO-C4X-14778) is a certified pharmaceutical impurity reference standard with the molecular formula C26H27N15O7S5 and a molecular weight of 821.91 g/mol.
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 | C26H27N15O7S5 |
| Molecular Weight | 821.91 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 15 |
| Sulfur Atoms | 5 |
Related Cefmenoxime Standards
- Cefmenoxime Impurity 13 (CAS CATO-C4X-147713)
- Cefmenoxime Impurity 7 (CAS CATO-C4X-14777)
- Cefmenoxime Impurity 12 (CAS CATO-C4X-147712)
- Cefmenoxime Impurity 4 (CAS CATO-C4X-14774)
- Cefmenoxime Impurity 5 (CAS CATO-C4X-14775)
- Cefmenoxime Impurity 2 (CAS 66340-45-2)
- Cefmenoxime Impurity 3 (CAS 126747-52-2)
- Cefmenoxime Impurity 6 (CAS CATO-C4X-14776)
Recommended Standards
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- Entecavir Impurity 13 (CAS 142217-79-6)
- Cabazitaxel Impurity 2 (CAS 160084-81-1)
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- Finerenone Impurity 76 (CAS CATO-C4X-288076)
- Pazopanib Impurity 60 (CAS CATO-C4X-172560)
- Alverine Impurity 19 (CAS CATO-C4X-153919)
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- 5-Methyl-1,3,2-dioxathiane 2,2-dioxide (CAS 62822-68-8)
- (R)-2-(6-Aminobenzo[d]thiazol-2-yl)-4,5-dihydrothiazole-4-carboxylic acid (CAS 5571-98-2)
- 4-(((2-Aminoethyl)(methyl)amino)methyl)benzonitrile (CAS 1250429-03-8)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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