Diethyl 1,2,5-triphenyl-2,5-dihydro-1H-pyrrole-3,4-dicarboxylate CAS 3339-86-4
| CAS No. | 3339-86-4 |
| Molecular Formula | C28H27NO4 |
| Molecular Weight | 441.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Diethyl 1,2,5-triphenyl-2,5-dihydro-1H-pyrrole-3,4-dicarboxylate (CAS 3339-86-4), molecular formula C28H27NO4 and molecular weight 441.52 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Diethyl 1,2,5-triphenyl-2,5-dihydro-1H-pyrrole-3,4-dicarboxylate (C28H27NO4) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C28H27NO4 |
| Molecular Weight | 441.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
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