| CAS No. | 5667-64-1 |
| Molecular Formula | C24H22BrN3O6 |
| Molecular Weight | 528.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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 supplies 4-((4-Bromophenyl)(hydroxy)methylene)-1-(5-(tert-butyl)oxazol-3(2H)-yl)-5-(4-nitrophenyl)pyrrolidine-2,3-dione (CAS 5667-64-1), a certified reference material (molecular formula C24H22BrN3O6, MW 528.35 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 4-((4-Bromophenyl)(hydroxy)methylene)-1-(5-(tert-butyl)oxazol-3(2H)-yl)-5-(4-nitrophenyl)pyrrolidine-2,3-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 528.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 4-((4-Bromophenyl)(hydroxy)methylene)-1-(5-(tert-butyl)oxazol-3(2H)-yl)-5-(4-nitrophenyl)pyrrolidine-2,3-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.
| Molecular Formula | C24H22BrN3O6 |
| Molecular Weight | 528.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |