Caspofungin Impurity 24 CAS 1131958-73-0
| CAS No. | 1131958-73-0 |
| Molecular Formula | - |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Caspofungin Impurity 24 (CAS 1131958-73-0), a pharmacopoeial impurity reference standard (molecular formula C52H84D4N10O15C2H4O2, MW 1157.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Caspofungin Impurity 24 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1157.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C52H84D4N10O15 2*C2H4O2 |
| Molecular Weight | 1157.41 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 10 |
Related Caspofungin Standards
- 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)
- Caspofungin Impurity 31(5-((3R)-3-Hydroxy-L-Ornithine)-Pneumocandin B0) (CAS 150283-04-8)
Recommended Standards
- Brexpiprazole Impurity 101 (CAS CATO-C4X-1131101)
- Naltrexone impurity 47 (CAS CATO-C4X-147547)
- Roxadustat Impurity 72 (CAS CATO-C4X-221372)
- N-(3-(3-(pyrrolidin-1-yl)prop-1-yn-1-yl)phenyl)acetamide (CAS 885950-23-2)
- (S)-Methyl 2-((methoxycarbonyl)amino)-2-(tetrahydro-2H-pyran-4-yl)acetate (CAS 1009120-03-9)
- 2-Amino-7-hydroxy-4-phenyl-4H-chromene-3-carbonitrile (CAS 111861-25-7)
- Alendronic Acid Impurity 7 (CAS CATO-C4X-22427)
- tert-butyl N-[1-(2-hydroxyethyl)cyclopropyl]carbamate (CAS 753023-57-3)
- 2-(5-Fluoro-2-methylphenyl)-3-methylbutan-2-ol (CAS 1339407-98-5)
- Insulin Degludec Impurity 6 (CAS CATO-C4X-21576)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com