1-(4-Ethoxyphenyl)-2,5-dihydro-1H-pyrrole-2,5-dione CAS 19077-60-2
| CAS No. | 19077-60-2 |
| Molecular Formula | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Ethoxyphenyl)-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 19077-60-2), molecular formula C12H11NO3 and molecular weight 217.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H11NO3, 1-(4-Ethoxyphenyl)-2,5-dihydro-1H-pyrrole-2,5-dione 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 217.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C12H11NO3 |
| Molecular Weight | 217.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Ethoxyphenyl Standards
- (4-Ethoxyphenyl)(oxazol-2-yl)methanone (CAS 898760-17-3)
- 1-(2-Ethoxyphenyl)-1H-pyrrole-2,5-dione (CAS 36817-57-9)
- 2-Ethoxyphenyl sulfamate (CAS 128276-53-9)
- 3-(4-Ethoxyphenyl)-1-methyl-1h-pyrazol-5-amine (CAS 1017665-63-2)
- 4-(4-Ethoxyphenyl)-1-methyl-1H-imidazol-2-amine (CAS 190377-17-4)
- 1-(3-Ethoxyphenyl)-2,2,2-trifluoroethan-1-one (CAS 1256467-24-9)
- 1-(2-Ethoxyphenyl)-2,2,2-trifluoroethan-1-one (CAS 1342067-27-9)
- 1-(4-Ethoxyphenyl)-2,2,2-trifluoroethan-1-one (CAS 26902-76-1)
Recommended Standards
- 3-Nitro-4-(pyrrolidin-1-yl)benzonitrile (CAS 19005-64-2)
- 2-[(4-methylquinolin-2-yl)oxy]acetic acid (CAS 194659-06-8)
- 7-Methoxy-2-methylquinoline-4-carboxylic acid (CAS 189815-81-4)
- 5-(4-Methoxyphenyl)-1H-pyrrole-3-carboxylic acid (CAS 1956354-64-5)
- 5-(tert-Butyl)nicotinic acid (CAS 1211589-63-7)
- 3-Hydroxy-5-phenylpentanenitrile (CAS 70102-88-4)
- 3-[4-(2-methoxyphenyl)piperazin-1-yl]-3-oxopropanenitrile (CAS 62508-79-6)
- N-(Benzo[d][1,3]dioxol-5-yl)-2-chloroacetamide (CAS 227199-07-7)
- 2-((1S,4S)-4-(4-chlorophenylsulfonyl)-4-(2,5-difluorophenyl)cyclohexyl)acetaldehyde (CAS 656810-85-4)
- Epalrestat Impurity 5 (CAS CATO-C4X-22365)
- 4-(4-Amino-3-fluorophenoxy)picolinamide (CAS 757251-54-0)
- Triphenylsilanecarboxylic acid (CAS 18670-88-7)
- 1-(6-methoxypyridin-2-yl)propan-1-amine (CAS 1270358-23-0)
- (Tyr?)-C-Peptide (human) (CAS 57327-90-9)
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