Piperacillin EP Impurity K CAS 2734474-72-5
| CAS No. | 2734474-72-5 |
| Molecular Formula | C23H27N5O7S |
| Molecular Weight | 517.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Piperacillin EP Impurity K (CAS 2734474-72-5) is a certified pharmaceutical impurity reference standard with the molecular formula C23H27N5O7S and a molecular weight of 517.55 g/mol.
Structurally, Piperacillin EP Impurity K (C23H27N5O7S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 517.55 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Piperacillin EP Impurity K 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 | C23H27N5O7S |
| Molecular Weight | 517.55 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Piperacillin Standards
- Piperacillin Monohydrate EP Impurity N (CAS CATO-C4X-173219)
- Piperacillin Impurity 31 (CAS CATO-C4X-173231)
- Piperacillin Impurity 38 (CAS CATO-C4X-173238)
- Piperacillin Impurity 57 (CAS CATO-C4X-173257)
- Piperacillin Impurity 44 (CAS 90686-52-5)
- Piperacillin Impurity 92 (CAS CATO-C4X-173292)
- Piperacillin-d5 (N-ethyl-d5) (CAS CATO-C4X-173258)
- Piperacillin Methyl Ester (CAS 65700-41-6)
Recommended Standards
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- 3-Chloro-4-(1-imidazolyl)benzaldehyde (CAS 870837-48-2)
- (S)-1-(3,4,5-trifluorophenyl)but-3-en-1-amine (CAS 1270064-02-2)
- 5-Chloro-3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 1202993-11-0)
- (3-Fluorophenyl)(thiophen-2-yl)methanol (CAS 860016-99-5)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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