Ertapenem Impurity 1 (Ring Open) CAS CATO-C4X-16331
| CAS No. | CATO-C4X-16331 |
| Molecular Formula | C22H24N3O8S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 513.50 g/mol gives Ertapenem Impurity 1 (Ring Open) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Ertapenem Impurity 1 (Ring Open) (CAS CATO-C4X-16331, C22H24N3O8SNa) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C22H24N3O8SNa, Ertapenem Impurity 1 (Ring Open) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 513.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C22H24N3O8S 3*Na |
| Molecular Weight | 513.50 g/mol |
| Purity | >90% |
| 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ertapenem Standards
- Ertapenem Impurity 29 (CAS 1150883-75-2)
- Ertapenem Dimer Form D Impurity (CAS 1199797-41-5)
- Ertapenem Impurity 32 (CAS 1199797-42-6)
- Ertapenem Impurity 10 (CAS 1199797-43-7)
- Ertapenem Impurity 33 (CAS 1199797-43-7&402955-37-7 (mixture))
- Ertapenem Impurity C344 (CAS 135042-12-5)
- Ertapenem Impurity C28 (CAS 147266-92-0)
- Ertapenem sodium (CAS 153773-82-1)
Recommended Standards
- Rotigotine Impurity 38 (CAS CATO-C4X-192738)
- Drotaverin Impurity 73 (CAS CATO-C4X-243573)
- Epirubicin EP Impurity G (Epirubicin Dimer) (CAS 1046827-43-3)
- Isobutylene Sulfide (CAS 3772-13-2)
- N-(3-acetamidophenyl)-3-chloropropanamide (CAS 900711-15-1)
- Methyl 6-chloro-2-iodo-5-methylnicotinate (CAS 1043870-59-2)
- 2-(4-(2H-Indazol-2-yl)phenyl)-N-hydroxypropanamide (CAS 81265-80-7)
- Methyl 2-Cyano-4-fluorobenzoate (CAS 127510-96-7)
- 1-(4-Chloro-3,5-difluorophenyl)ethan-1-one (CAS 1256352-85-8)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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