Benzylpenicillin EP Impurity D CAS 13093-87-3
| CAS No. | 13093-87-3 |
| Molecular Formula | C16H18N2O4S |
| Molecular Weight | 334.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Benzylpenicillin EP Impurity D is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 334.39 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).
Benzylpenicillin EP Impurity D (CAS 13093-87-3) is a certified pharmaceutical impurity reference standard with the molecular formula C16H18N2O4S and a molecular weight of 334.39 g/mol.
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 EP Impurity D 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 | C16H18N2O4S |
| Molecular Weight | 334.39 g/mol |
| Purity | >90% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Benzylpenicillin Standards
- Benzylpenicillin Impurity 54 (CAS 90962-63-3)
- Benzylpenicillin CP Impurity I (CAS 3264-88-8)
- Benzylpenicillin Impurity 25 (CAS 525-97-3)
- Benzylpenicillin Impurity 79 (CAS CATO-C4X-189979)
- Benzylpenicillin Impurity 10 (CAS 34104-15-9)
- Benzylpenicillin Potassium EP Impurity C (CAS 525-91-7)
- Benzylpenicillin Impurity 28 (CAS 4052-54-4)
- Benzylpenicillin Impurity 83 (CAS CATO-C4X-189983)
Recommended Standards
- Torasemide EP Impurity C (CAS 58155-35-4)
- Oseltamivir Impurity 135 (CAS CATO-C4X-1720135)
- Flurbiprofen Impurity 142 (CAS CATO-C4X-1444142)
- Trilaciclib Impurity 3 (CAS 2170747-01-8)
- Ulipristal Impurity 18 (CAS CATO-C4X-191518)
- Fudosteine Impurity 63 (CAS CATO-C4X-144763)
- Acotiamide Impurity 18 (CAS CATO-C4X-111418)
- n-(3,5-Difluorophenyl)tetrahydro-2h-pyran-4-amine (CAS 1157009-62-5)
- Diethyl (1,1-difluoro-2-hydroxy-4-phenylbutyl)phosphonate (CAS 481053-33-2)
- 3-Chloro-2-isopropoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1344997-94-9)
- Methyl 4-amino-1-(2-methylbutyl)-1h-pyrrole-2-carboxylate (CAS 1247366-57-9)
- Stannane, [2,2'-bithiophen]-5-yltrimethyl- (CAS 133144-35-1)
- 5',6'-Dihydro-4'H-spiro[cyclopentane-1,7'-thieno[3,2-c]pyridin]-4'-one (CAS 2789682-25-1)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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