Carfilzomib Impurity 21 CAS CATO-C4X-102221
| CAS No. | CATO-C4X-102221 |
| 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.
Carfilzomib Impurity 21 (CAS CATO-C4X-102221) is a certified pharmaceutical impurity reference standard with the molecular formula C31H42N4O6 and a molecular weight of 566.69 g/mol.
Carfilzomib Impurity 21 (C31H42N4O6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Carfilzomib Impurity 21 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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 |
| 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 Imputity 56 (CAS 868540-16-3)
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)
- Dacomitinib Impurity 29 (CAS CATO-C4X-208629)
- Pramipexole Impurity 54 (CAS CATO-C4X-110754)
- Tofacitinib Impurity 101 (CAS CATO-C4X-1079101)
- 3-(4-Isopropylpiperazin-1-yl)propan-1-amine (CAS 4553-26-8)
- 2-Propenoic acid, 2-methyl-, methyl ester, polymer with methyl 2-propenoate (CAS 9011-87-4)
- 5-(Trifluoromethoxy)quinolin-4-ol (CAS 1261749-07-8)
- N-Tosyl-L-alanyloxyindole (CAS 75062-54-3)
- Methyl (2s)-2-(2-bromoacetamido)-3-methylbutanoate (CAS 169701-39-7)
- Oseltamivir Impurity 102 (CAS 943515-58-0)
- Peptide 441 (CAS CATO-CPTD788441)
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