4-Benzoyl-3-hydroxy-5-(4-nitrophenyl)-1-phenyl-1H-pyrrol-2(5H)-one CAS 331751-17-8
| CAS No. | 331751-17-8 |
| Molecular Formula | C23H16N2O5 |
| Molecular Weight | 400.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Benzoyl-3-hydroxy-5-(4-nitrophenyl)-1-phenyl-1H-pyrrol-2(5H)-one 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.
4-Benzoyl-3-hydroxy-5-(4-nitrophenyl)-1-phenyl-1H-pyrrol-2(5H)-one (CAS 331751-17-8) is a high-purity analytical reference standard with the molecular formula C23H16N2O5 and a molecular weight of 400.38 g/mol.
The molecular framework of 4-Benzoyl-3-hydroxy-5-(4-nitrophenyl)-1-phenyl-1H-pyrrol-2(5H)-one (C23H16N2O5) is characterized by a flavonoid 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H16N2O5 |
| Molecular Weight | 400.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 1-(5-Bromo-4H-1,2,4-triazol-3-yl)ethanol (CAS 2707680-30-4)
- 3-(3,4-Dimethoxyphenyl)-6-(piperazin-1-yl)pyridazine (CAS 1338678-88-8)
- Methyl 4-(((benzyloxy)carbonyl)amino)bicyclo[2.2.1]heptane-1-carboxylate (CAS 1252672-35-7)
- 3-(3-Ethyl-1-methyl-1h-1,2,4-triazol-5-yl)propan-1-amine (CAS 1341927-12-5)
- 2,4-Dimethyl-N-(2-phenoxyethyl)aniline (CAS 327070-55-3)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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