Lenalidomide Impurity 44 CAS 632340-56-8
| CAS No. | 632340-56-8 |
| Molecular Formula | C8H6BrNO4 |
| Molecular Weight | 260.04 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 260.04 g/mol gives Lenalidomide Impurity 44 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Lenalidomide Impurity 44 (CAS 632340-56-8, C8H6BrNO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C8H6BrNO4, Lenalidomide Impurity 44 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 260.04 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Lenalidomide Impurity 44 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 | C8H6BrNO4 |
| Molecular Weight | 260.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Lenalidomide Standards
Recommended Standards
- Formoterol Impurity 96 (CAS 5029-61-8)
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- (3-Methoxy-6-(4-methoxyphenyl)pyridazin-4-yl)boronic acid (CAS 1015481-16-9)
- Nintedanib Impurity 134 (CAS CATO-C4X-1814134)
- Letermovir Impurity 93 (CAS CATO-C4X-291593)
- Bumetanide Impurity 47 (CAS CATO-C4X-198647)
- 6-methyl-1H-indole-3-sulfonic acid (CAS 2361020-96-2)
- 3-(Pyridin-3-yl)-6-(trifluoromethyl)pyridin-2-ol (CAS 1214325-62-8)
- 2-Amino-2-(quinolin-2-yl)acetic acid (CAS 500755-98-6)
- Methyl 1-methyl-2-thioxo-1,2-dihydropyridine-3-carboxylate (CAS 86051-22-1)
- 2-(Hydroxymethyl)terephthalic acid (CAS 23405-34-7)
- 5-O-Tosylguanosine (CAS 39947-33-6)
- α Bag Cell Peptide (1-9) (CAS 87549-52-8)
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