1-ethyl-3-methyl-2,5-dihydro-1H-pyrrole-2,5-dione CAS 31217-72-8
| CAS No. | 31217-72-8 |
| Molecular Formula | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-ethyl-3-methyl-2,5-dihydro-1H-pyrrole-2,5-dione is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 139.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-ethyl-3-methyl-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 31217-72-8), molecular formula C7H9NO2 and molecular weight 139.15 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 1-ethyl-3-methyl-2,5-dihydro-1H-pyrrole-2,5-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 1-Ethyl-3-hydroxy-1,2-dihydropyridin-2-one (CAS 90037-19-7)
- 2-(1h-Pyrrol-1-yl)propanoic acid (CAS 63751-72-4)
- 1-Cyanocyclopentane-1-carboxylic acid (CAS 540490-54-8)
- 2-(1H-pyrrol-2-yl)propanoic acid (CAS 92454-09-6)
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- 1-Isopentyl-5-propyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1250150-18-5)
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Why CATO?
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