Peptide Impurity 24 CAS CATO-CPTD788824
| CAS No. | CATO-CPTD788824 |
| Molecular Formula | C20H30N2O8 |
| Molecular Weight | 426.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Peptide Impurity 24 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Peptide Impurity 24 (CAS CATO-CPTD788824, C20H30N2O8) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Peptide Impurity 24 (C20H30N2O8) contains a flavonoid core, 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 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 | C20H30N2O8 |
| Molecular Weight | 426.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Peptide Standards
- Peptide Impurity 41 (CAS CATO-CPTD788841)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
- Peptide Impurity 05 (CAS 2322924-83-2)
- Peptide Impurity 04 (CAS 2913424-91-4)
- Peptide 6A (H-6905.0005) (CAS 73549-32-3)
- Peptide Fmoc-Thi-Thi-OH (CAS CATO-CPTD788552)
- Peptide Impurity 40 (CAS CATO-CPTD788840)
- Peptide Impurity 34 (CAS 21282-09-7)
Recommended Standards
- Fmoc-L-Trp-OH (CAS 35737-15-6)
- N-(3-(tert-butyl)-1-methyl-4-oxo-1,4-dihydroindeno[1,2-c]pyrazol-6-yl)-2-(1H-indol-3-yl)-2-oxoacetamide (CAS 1024523-22-5)
- Fmoc-D-Dap(Boc)-OH (CAS 198544-42-2)
- 1,3,5-Tris(1H-benzo[d]imidazol-1-yl)benzene (CAS 1207945-97-8)
- Relebactam Impurity 21 (CAS CATO-C4X-214421)
- Avibactam impurity 113 (CAS 115134-37-7)
- Ruxolitinib Impurity 186 (CAS 941685-41-2)
- 4-{4-[(E)-2-Cyano-3-methoxy-3-oxo-1-propenyl]-2-pyrimidinyl}phenyl 2-thiophenecarboxylate (CAS 477871-08-2)
- 2-Chloro-N-(3,5-dichloropyridin-2-yl)acetamide (CAS 735319-17-2)
- 5-Bromo-1-propionylindoline (CAS 785785-25-3)
- 2,6-Diamino-5-methylnicotinaldehyde (CAS 63196-30-5)
- N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-6-nitroquinazolin-4-amine (CAS 882084-02-8)
- 4-(1-(4-Bromophenyl)-1H-pyrazol-5-yl)pyridine (CAS 1269292-69-4)
- C-Peptide 1 (rat) (CAS 41475-27-8)
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