Caspofungin Impurity 49 Diacetate CAS CATO-C4X-157549
| CAS No. | CATO-C4X-157549 |
| Molecular Formula | C102H168N18O30 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Caspofungin Impurity 49 Diacetate (CAS CATO-C4X-157549, C102H168N18O30C2H4O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Caspofungin Impurity 49 Diacetate (C102H168N18O30C2H4O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C102H168N18O30 2*C2H4O2 |
| Molecular Weight | 2186.61 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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 18 |
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
- Emedastine Impurity 30 (CAS CATO-C4X-226730)
- Paliperidone Impurity 80 (CAS 130049-87-5)
- Ibandronic Impurity 26 (CAS CATO-C4X-224426)
- 3-(4-Hydroxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 1093649-88-7)
- H-D-Tyr(PO3H2)-OH (CAS 108321-25-1)
- 2-(1-methyl-1H-pyrazol-4-yl)-1,3-benzoxazol-6-amine (CAS 1152583-84-0)
- 4-Amino-1-(pyrrolidin-1-yl)butan-1-one (CAS 244789-38-6)
- (±)-Mevalonolactone-4,4,5,5,6,6,6-d7 (CAS 347840-19-1)
- 4-ethynyl-4-fluoropiperidine (CAS 1408300-13-9)
- Semaglutide Impurity 1(OtBu-Ste-D-γGlu(OtBu)-AEEA-AEEA-OH) (CAS CATO-C4X-22261)
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