Carfilzomib Imputity 56 CAS 868540-16-3
| CAS No. | 868540-16-3 |
| Molecular Formula | C31H42N4O6 |
| Molecular Weight | 566.69 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.
As a process- or degradation-related impurity, Carfilzomib Imputity 56 (CAS 868540-16-3, C31H42N4O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Carfilzomib Imputity 56 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 566.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Carfilzomib Imputity 56 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 | C31H42N4O6 |
| Molecular Weight | 566.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Carfilzomib Standards
- Carfilzomib Impurity 1 (CAS 875309-92-5)
- Carfilzomib Impurity 15 (CAS CATO-C4X-102215)
- Carfilzomib Impurity 16 (CAS CATO-C4X-102216)
- Carfilzomib Impurity 17 (CAS CATO-C4X-102217)
- Carfilzomib Impurity 18 (CAS CATO-C4X-102218)
- Carfilzomib Impurity 19 (CAS CATO-C4X-102219)
- Carfilzomib Impurity 20 (CAS CATO-C4X-102220)
- Carfilzomib Impurity 21 (CAS CATO-C4X-102221)
Recommended Standards
- Formoterol impurity 123 (CAS CATO-C4X-1525123)
- Formoterol impurity 146 (CAS CATO-C4X-1525146)
- Ritonavir EP Impurity D (CAS 144142-33-6)
- Tepotinib impurity 6 (CAS CATO-C4X-33746)
- Avanafil Impurity 135 (CAS CATO-C4X-1118135)
- Letermovir Impurity 34 (CAS CATO-C4X-291534)
- Iopamidol Impurity 25 (CAS CATO-C4X-145025)
- 5-Bromo-2-iodo-1-methyl-1H-imidazole (CAS 86026-83-7)
- (3r,5s)-3-Cyclopropyl-5-methyl-2-oxo-pyrrolidine-3-carbonitrile (CAS 1462290-00-1)
- N,3-Dimethyl-6-phenylisoxazolo[5,4-b]pyridin-4-amine (CAS 61658-67-1)
- 5-Chloro-3-methyl-2-(2-methylpropoxy)pyridine (CAS 1881292-88-1)
- Methyl 3-methyl-1-(p-tolyl)-1H-pyrazole-5-carboxylate (CAS 55115-13-4)
- Ethyl 2-(bromomethyl)-6-nitrobenzoate (CAS 54526-01-1)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
Why CATO?
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