Caspofungin Impurity 26 CAS CATO-C4X-157526
| CAS No. | CATO-C4X-157526 |
| Molecular Formula | C50H80N8O16 |
| Molecular Weight | 1049.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Caspofungin Impurity 26 (CAS CATO-C4X-157526), a pharmacopoeial impurity reference standard (molecular formula C50H80N8O16, MW 1049.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C50H80N8O16, Caspofungin Impurity 26 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 1049.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C50H80N8O16 |
| Molecular Weight | 1049.21 g/mol |
| Purity | >95% |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
Related Caspofungin Standards
- Caspofungin Impurity 25 (CAS CATO-C4X-157525)
- Caspofungin Impurity 31(5-((3R)-3-Hydroxy-L-Ornithine)-Pneumocandin B0) (CAS 150283-04-8)
- Caspofungin EP Impurity B(RRT=1.50) (CAS 314080-31-4)
- Caspofungin Impurity 20 (CAS CATO-C4X-157520)
- Caspofungin Pneumocandin B0 Impurity (CAS 135575-42-7)
- Caspofungin Pneumocandin C0 (CAS 144074-96-4)
- Caspofungin Impurity 13 (CAS CATO-C4X-157513)
- Caspofungin Impurity 23 (CAS CATO-C4X-157523)
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- Tiotropium Bromide EP Impurity A Sodium Dihydrate (CAS 877467-46-4(Anhydrous CAS))
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- methyl 4-fluoro-3-methyl-1H-pyrrole-2-carboxylate (CAS 2089300-72-9)
- Hexapeptide-11 (CAS 100684-36-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com