Lenalidomide Impurity 22 CAS 61940-22-5
| CAS No. | 61940-22-5 |
| Molecular Formula | C9H9NO4 |
| Molecular Weight | 195.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Lenalidomide Impurity 22 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Lenalidomide Impurity 22 (CAS 61940-22-5), a pharmacopoeial impurity reference standard (molecular formula C9H9NO4, MW 195.17 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Lenalidomide Impurity 22 (C9H9NO4) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H9NO4 |
| Molecular Weight | 195.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| 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.) | 1974 |
| Nitrogen Atoms | 1 |
Related Lenalidomide Standards
- Lenalidomide Impurity 12 (CAS 59382-59-1)
- Lenalidomide Impurity 20 (CAS 62621-09-4)
- Lenalidomide Impurity 21 (CAS 77324-87-9)
- Lenalidomide Impurity 23 (CAS 24078-21-5)
- Lenalidomide Impurity 24 (CAS 5471-82-9)
- Lenalidomide Impurity 32 (CAS CATO-C4X-190332)
- Lenalidomide Impurity 13 (CAS 1975-50-4)
- Lenalidomide Impurity 28 (CAS 13506-76-8)
Recommended Standards
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- Lovastatin Impurity 34 (CAS CATO-C4X-168434)
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- Rupatadine Impurity 4 (CAS 1235342-53-6)
- 7-Methyl-1h,2h,3h,4h-cyclopenta[b]indol-2-amine (CAS 1706459-15-5)
- 0211AF 5-Methoxy-3,4-dihydro-1,7-naphthyridin-2(1H)-one 82673-70-9 C9H10N2O2 (CAS 82673-70-9)
- 2-(4-Bromophenyl)oxazole-5-carbaldehyde (CAS 1206982-22-0)
- 3,5-Dimethylnitrobenzene (CAS 99-12-7)
- 3-Amino-9H-fluoren-2-ol (CAS 107623-30-3)
- 2-(6-(Trifluoromethyl)pyridin-2-yl)-2,3-dihydrobenzo[d][1,3,2]diazaborinin-4(1H)-one (CAS 2242502-31-2)
- Semaglutide Impurity 8 (CAS CATO-C4X-22268)
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