4-Ethyl-2-oxopyrrolidine-3-carboxylic acid CAS 89775-83-7
| CAS No. | 89775-83-7 |
| Molecular Formula | C7H11NO3 |
| Molecular Weight | 157.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Ethyl-2-oxopyrrolidine-3-carboxylic acid (CAS 89775-83-7), molecular formula C7H11NO3 and molecular weight 157.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H11NO3, 4-Ethyl-2-oxopyrrolidine-3-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 157.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C7H11NO3 |
| Molecular Weight | 157.17 g/mol |
| Appearance | 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, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 1-Ethyl-5-oxopyrrolidine-2-carboxylic acid (CAS 1001390-60-8)
- Methyl 5-Oxopyrrolidine-3-acetate (CAS 1134289-71-6)
- Ethyl 3-Oxopyrrolidine-1-carboxylate (CAS 14891-10-2)
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