Caspofungin Impurity 51 Acetate Salt CAS CATO-C4X-157551
| CAS No. | CATO-C4X-157551 |
| Molecular Formula | C51H84N10O16 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Caspofungin Impurity 51 Acetate Salt (CAS CATO-C4X-157551), a pharmacopoeial impurity reference standard (molecular formula C51H84N10O16C2H4O2, MW 1153.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Caspofungin Impurity 51 Acetate Salt is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1153.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), Caspofungin Impurity 51 Acetate Salt 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 | C51H84N10O16 C2H4O2 |
| Molecular Weight | 1153.34 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 | 10 |
Related Caspofungin Standards
- Caspofungin Impurity 24 (CAS 1131958-73-0)
- Caspofungin Impurity Triflate Salt (CAS 1201042-11-6)
- Caspofungin EP Impurity A (CAS 1202167-57-4)
- Caspofungin EP Impurity A Acetate (CAS 1202167-57-4(Free Base))
- Caspofungin Pneumocandin B0 Impurity (CAS 135575-42-7)
- Caspofungin Impurity A02-2 (CAS 1404083-47-1)
- Caspofungin Impurity A02-2 Acetate (CAS 1404083-47-1(Free Base))
- Caspofungin Pneumocandin C0 (CAS 144074-96-4)
Recommended Standards
- Buserelin EP Impurity A (CAS CATO-C4X-22121)
- Policresulen Impurity N11 (CAS 3077-71-2)
- Chlorpromazine EP Impurity A (CAS 969-99-3)
- 1-(2,2-Difluoroethyl)-4-methyl-1h-pyrazol-3-amine (CAS 1174875-53-6)
- 2-(3-Butoxyphenyl)-8-methylquinoline-4-carbonyl chloride (CAS 1160254-67-0)
- 2-(2-Hydroxyethoxy)ethyl 2-oxo-2-phenylacetate (CAS 442536-99-4)
- (4,5-Difluoro-2-nitrophenyl)boronic acid (CAS 1150114-59-2)
- 1-Amino-5-fluoro-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 91286-55-4)
- 3-(Pyrimidin-2-yl)prop-2-yn-1-ol (CAS 260441-08-5)
- Des-Ala21-Tirzepatide (CAS CATO-CPTD788952)
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