Caspofungin EP Impurity A CAS 1202167-57-4
| CAS No. | 1202167-57-4 |
| Molecular Formula | C51H86N10O15 |
| Molecular Weight | 1079.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Caspofungin EP Impurity A (CAS 1202167-57-4), a pharmacopoeial impurity reference standard (molecular formula C51H86N10O15, MW 1079.29 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Caspofungin EP Impurity A (C51H86N10O15) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 1079.29 g/mol, it falls into the high-molecular-weight range. 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.
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 | C51H86N10O15 |
| Molecular Weight | 1079.29 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 10 |
Related Caspofungin Standards
- Caspofungin Impurity 13 (CAS CATO-C4X-157513)
- Caspofungin Impurity 23 (CAS CATO-C4X-157523)
- Caspofungin impurity 59 (CAS CATO-C4X-157559)
- Caspofungin Impurity 48 (CAS CATO-C4X-157548)
- Caspofungin Impurity 14 (CAS CATO-C4X-157514)
- Caspofungin Impurity 17 (CAS 162808-62-0)
- Caspofungin Acetate C0 Analog(Caspofungin EP Impurity F)(RRT=1.1) (CAS CATO-C4X-157522)
- Caspofungin Impurity C (CAS 251095-73-5)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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