Biapenem impurity 13 CAS CATO-C4X-227313
| CAS No. | CATO-C4X-227313 |
| Molecular Formula | C13H19N3O4S |
| Molecular Weight | 313.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Biapenem impurity 13 (CAS CATO-C4X-227313) is a certified pharmaceutical impurity reference standard with the molecular formula C13H19N3O4S and a molecular weight of 313.37 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Biapenem impurity 13 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 313.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C13H19N3O4S |
| Molecular Weight | 313.37 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Biapenem Standards
- Biapenem impurity 14 (CAS CATO-C4X-227314)
- Biapenem impurity 15 (CAS CATO-C4X-227315)
- Biapenem impurity 28 (CAS CATO-C4X-227328)
- Biapenem impurity 6 (CAS CATO-C4X-22736)
- Biapenem (CAS 120410-24-4)
- Biapenem-13C2,15N3 (CAS 120410-24-4 (unlabeled))
- Biapenem impurity 27 (CAS CATO-C4X-227327)
- Biapenem impurity 5 (CAS CATO-C4X-22735)
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