| CAS No. | 338756-65-3 |
| Molecular Formula | C19H10Cl2O3 |
| Molecular Weight | 357.19 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.
(3Z)-3-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-1,3-dihydro-2-benzofuran-1-one (CAS 338756-65-3) is a high-purity analytical reference standard with the molecular formula C19H10Cl2O3 and a molecular weight of 357.19 g/mol.
Based on its molecular formula C19H10Cl2O3, (3Z)-3-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-1,3-dihydro-2-benzofuran-1-one contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 357.19 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.
As a certified reference material (CRM), (3Z)-3-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-1,3-dihydro-2-benzofuran-1-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.
| Molecular Formula | C19H10Cl2O3 |
| Molecular Weight | 357.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |