Pomalidomide-PEG<SUB>3</SUB>-CO<SUB>2</SUB>H CAS 2138440-82-9
| CAS No. | 2138440-82-9 |
| Molecular Formula | C22H27N3O9 |
| Molecular Weight | 477.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pomalidomide-PEG<SUB>3</SUB>-CO<SUB>2</SUB>H 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.
Pomalidomide-PEG<SUB>3</SUB>-CO<SUB>2</SUB>H (CAS 2138440-82-9), molecular formula C22H27N3O9 and molecular weight 477.46 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Pomalidomide-PEG<SUB>3</SUB>-CO<SUB>2</SUB>H is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 477.46 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C22H27N3O9 |
| Molecular Weight | 477.46 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
Recommended Standards
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- Ethyl 5-methyl-2-(methylthio)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1263206-90-1)
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- 2-Chloro-1-[4-(4-methoxybenzenesulfonyl)piperazin-1-yl]ethan-1-one (CAS 925397-35-9)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
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