| CAS No. | 331460-95-8 |
| Molecular Formula | C21H14Cl2O4S |
| Molecular Weight | 433.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 433.30 g/mol gives 4-[(1E)-3-(4-Chlorophenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-[(1E)-3-(4-Chlorophenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate (CAS 331460-95-8) is a high-purity analytical reference standard with the molecular formula C21H14Cl2O4S and a molecular weight of 433.30 g/mol.
The molecular framework of 4-[(1E)-3-(4-Chlorophenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate (C21H14Cl2O4S) is characterized by a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 manufactures 4-[(1E)-3-(4-Chlorophenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate 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 | C21H14Cl2O4S |
| Molecular Weight | 433.30 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Sulfur Atoms | 1 |