Ethyl 2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate CAS 4189-20-2
| CAS No. | 4189-20-2 |
| Molecular Formula | C8H11NO3 |
| Molecular Weight | 169.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate.
Ethyl 2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate (CAS 4189-20-2) is a high-purity analytical reference standard with the molecular formula C8H11NO3 and a molecular weight of 169.18 g/mol.
Based on its molecular formula C8H11NO3, Ethyl 2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate 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 169.18 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate 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 | C8H11NO3 |
| Molecular Weight | 169.18 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Recommended Standards
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- Ethyl 3-(aminomethyl)furan-2-carboxylate (CAS 944467-96-3)
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