Piperacillin EP Impurity C CAS 2649505-15-5
| CAS No. | 2649505-15-5 |
| Molecular Formula | C22H29N5O6S |
| Molecular Weight | 491.56 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 491.56 g/mol gives Piperacillin EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Piperacillin EP Impurity C (CAS 2649505-15-5) is a certified pharmaceutical impurity reference standard with the molecular formula C22H29N5O6S and a molecular weight of 491.56 g/mol.
Based on its molecular formula C22H29N5O6S, Piperacillin EP Impurity C 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 491.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C22H29N5O6S |
| Molecular Weight | 491.56 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Piperacillin Standards
- Piperacillin Impurity 81 (CAS 64817-23-8)
- Piperacillin Impurity 44 (CAS 90686-52-5)
- Piperacillin EP Impurity K (CAS 2734474-72-5)
- 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 (CAS CATO-C4X-173245)
Recommended Standards
- Sulfo-DMAC-SPP (CAS 663599-11-9)
- N-(3,5-Dimethoxyphenyl)-2-((4-(4-ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477330-20-4)
- 1-(4-tert-Butylbenzenesulfonyl)-4-{5-[3-(trifluoromethyl)phenyl]-1H-pyrazol-3-yl}piperidine (CAS 1025724-85-9)
- N-(3,3-Diphenylpropyl)-1-(4-fluorobenzyl)-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxamide (CAS 946251-97-4)
- Tofacitinib Impurity 63 (CAS 1354469-76-3)
- Venetoclax Impurity 37 (CAS CATO-C4X-249537)
- Fluocinonide Impurity 3 (CAS CATO-C4X-21473)
- Sodium 6-oxo-1,6-dihydropyridine-3-carboxylate (CAS 15864-85-4)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (4-amino-2-(pyridin-4-yl)pyrimidin-5-yl)boronate (CAS 2223031-74-9)
- 3-(3-Methyl-5-oxo-4,5-dihydro-1,2-oxazol-4-yl)propanoic acid (CAS 1000933-37-8)
- Ethyl 5,6,7-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 836619-82-0)
- 4-Phenethylaniline hydrochloride (CAS 71845-20-0)
- ethyl 3-(4-hydroxyphenyl)hex-4-ynoate (CAS 865233-41-6)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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