Benzylpenicillin Impurity 1 CAS CATO-C4X-18991
| CAS No. | CATO-C4X-18991 |
| Molecular Formula | C18H25N3O6S |
| Molecular Weight | 411.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Benzylpenicillin Impurity 1 (CAS CATO-C4X-18991, C18H25N3O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C18H25N3O6S, Benzylpenicillin Impurity 1 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 411.47 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).
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.
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 | C18H25N3O6S |
| Molecular Weight | 411.47 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Benzylpenicillin Standards
- Benzylpenicillin Impurity 70 (CAS CATO-C4X-189970)
- Benzylpenicillin Impurity 81 (CAS CATO-C4X-189981)
- Benzylpenicillin Impurity 51 (CAS CATO-C4X-189951)
- Benzylpenicillin Impurity 76 (CAS CATO-C4X-189976)
- Benzylpenicillin CP Impurity J (CAS CATO-C4X-189910)
- Benzylpenicillin Impurity 47 (CAS CATO-C4X-189947)
- Benzylpenicillin Impurity 52 (CAS CATO-C4X-189952)
- Benzylpenicillin Impurity 68 (CAS 30200-14-7)
Recommended Standards
- Fluvastatin Impurity 16 (CAS 2117644-62-7)
- Nebivolol-D6 (CAS 99200-09-6 (unlabeled))
- Amoxicillin Impurity 62 (CAS CATO-C4X-114862)
- Roxadustat impurity 120 (CAS CATO-C4X-2213120)
- Dexmedetomidine Impurity 75 (CAS 2128719-74-2)
- Salbutamol EP Impurity G (CAS 64092-10-0)
- Linagliptin Impurity 27 (CAS 56700-70-0)
- 2-(Chloromethyl)-4-methyl-1H-benzo[d]imidazole (CAS 80567-69-7)
- 2-Chloro-5-(2,3-difluorophenyl)pyrimidine (CAS 193400-11-2)
- 2-(4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)propan-1-amine (CAS 956821-83-3)
- 1.14-Benzodinaphthobisanthene (CAS 362052-01-5)
- 3-(4-methyl-1,3-thiazol-2-yl)morpholine (CAS 1540791-45-4)
- Methyl7,7-difluoronorcarane-3-carboxylate (CAS 1494594-75-0)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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