Benzylpenicillin Impurity 71 CAS CATO-C4X-189971
| CAS No. | CATO-C4X-189971 |
| Molecular Formula | C25H29N3O5S |
| Molecular Weight | 483.58 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.
As a process- or degradation-related impurity, Benzylpenicillin Impurity 71 (CAS CATO-C4X-189971, C25H29N3O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Benzylpenicillin Impurity 71 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 483.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C25H29N3O5S |
| Molecular Weight | 483.58 g/mol |
| Purity | ≥95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Benzylpenicillin Standards
- Benzylpenicillin Impurity 53 (CAS CATO-C4X-189953)
- Benzylpenicillin Impurity 52 (CAS CATO-C4X-189952)
- Benzylpenicillin Impurity 68 (CAS 30200-14-7)
- Benzylpenicillin Impurity 69 (CAS CATO-C4X-189969)
- Benzylpenicillin Impurity 27 (CAS CATO-C4X-189927)
- Benzylpenicillin Impurity 51 (CAS CATO-C4X-189951)
- Benzylpenicillin Impurity 70 (CAS CATO-C4X-189970)
- Benzylpenicillin Impurity 1 (CAS CATO-C4X-18991)
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