Benzylpenicillin Impurity 34 CAS 56609-07-5
| CAS No. | 56609-07-5 |
| Molecular Formula | C10H11NO3 |
| Molecular Weight | 193.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 193.20 g/mol gives Benzylpenicillin Impurity 34 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Benzylpenicillin Impurity 34 (CAS 56609-07-5) is a certified pharmaceutical impurity reference standard with the molecular formula C10H11NO3 and a molecular weight of 193.20 g/mol.
The molecular framework of Benzylpenicillin Impurity 34 (C10H11NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Benzylpenicillin Impurity 34 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H11NO3 |
| Molecular Weight | 193.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
Related Benzylpenicillin Standards
- Benzylpenicillin CP Impurity H (CAS 500-98-1)
- Benzylpenicillin Impurity N1 (CAS 64950-14-7)
- Benzylpenicillin Impurity 74 (CAS 5259-87-0)
- Benzylpenicillin CP Impurity G (CAS CATO-C4X-18997)
- Benzylpenicillin Impurity 56 (CAS CATO-C4X-189956)
- Benzylpenicillin (Benzathine) Tetrahydrate EP Impurity A (CAS 4152-09-4)
- Benzylpenicillin Impurity 77 (CAS CATO-C4X-189977)
- Benzylpenicillin Impurity 55 (CAS 64527-07-7)
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