Lenalidomide Impurity 13 CAS 1975-50-4
| CAS No. | 1975-50-4 |
| Molecular Formula | C8H7NO4 |
| Molecular Weight | 181.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Lenalidomide Impurity 13 (CAS 1975-50-4, C8H7NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Lenalidomide Impurity 13 (C8H7NO4) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C8H7NO4 |
| Molecular Weight | 181.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Lenalidomide Standards
- Lenalidomide Impurity 28 (CAS 13506-76-8)
- Lenalidomide Impurity 26 (CAS 65399-18-0)
- Lenalidomide Impurity 19 (CAS 366452-97-3)
- Lenalidomide Impurity 12 (CAS 59382-59-1)
- Lenalidomide Impurity 20 (CAS 62621-09-4)
- Lenalidomide Impurity 21 (CAS 77324-87-9)
- Lenalidomide Impurity 22 (CAS 61940-22-5)
- Lenalidomide Impurity 23 (CAS 24078-21-5)
Recommended Standards
- Indobufen Impurity 17 (CAS 104-03-0)
- 4-Hydroxy-3-Nitroacetophenone (CAS 6322-56-1)
- Dopamine Impurity 3 (CAS 89942-72-3)
- N-Nitroso-Deferasirox EP Impurity F (CAS CATO-C4X-143823)
- Tiapride EP Impurity D (CAS 63484-11-7)
- Darolutamide Impurity 31 (CAS CATO-C4X-310631)
- Lifitegrast Impurity 101 (CAS CATO-C4X-2409101)
- ethyl 2-(5-hydroxypyridin-2-yl)acetate (CAS 132807-30-8)
- Ent-Cinacalcet Hydrochloride (CAS 694495-47-1)
- Ethyl 3-cyano-3-ethyl-5-methylhexanoate (CAS 90355-26-3)
- 1-(tert-butoxycarbonyl)-4-phenylpiperidine-4-carboxylic acid (CAS 167262-68-2)
- 4-Oxo-4H-chromene-2-carboxylate (CAS 72275-48-0)
- 2-(Dimethylamino)-2-ethylpropane-1,3-diol (CAS 44865-14-7)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
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