Penicillin Impurity 41 CAS CATO-C4X-189941
| CAS No. | CATO-C4X-189941 |
| Molecular Formula | C32H38N4O9S2 |
| Molecular Weight | 686.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Penicillin Impurity 41 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.
CATO supplies Penicillin Impurity 41 (CAS CATO-C4X-189941), a pharmacopoeial impurity reference standard (molecular formula C32H38N4O9S2, MW 686.80 g/mol) used for the identification and quantification of trace impurities in APIs.
Penicillin Impurity 41 (C32H38N4O9S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C32H38N4O9S2 |
| Molecular Weight | 686.80 g/mol |
| Purity | >90% |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Penicillin Standards
- Penicillin-G 4-methoxybenzyl ester sulfoxide (CAS 30034-13-0)
- Penicillin Impurity 44 (CAS CATO-C4X-189944)
- Penicillin Impurity 42 (CAS CATO-C4X-189942)
- Penicillin V β-Sulfoxide-d (CAS 148680-07-3)
- Penicillin V methyl ester (CAS 2315-05-1)
- Penicillin V-d5 (CAS 1356837-87-0)
- Penicillin V (CAS 87-08-1)
- Penicillin Impurity 40 (CAS 76350-36-2)
Recommended Standards
- Isavuconazole Impurity 71 (CAS CATO-C4X-123671)
- Benzylpenicillin Impurity 65 (CAS CATO-C4X-189965)
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- Penehyclidine impurity 12 (CAS 151673-91-5)
- Urapidil Impurity 112 (CAS CATO-C4X-1924112)
- Dapagliflozin Impurity 185 (CAS CATO-C4X-1138185)
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Why CATO?
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