4,4'-(4-Chlorobut-1-ene-1,1-diyl)bis(fluorobenzene) CAS 3311-94-2
| CAS No. | 3311-94-2 |
| Molecular Formula | C16H13ClF2 |
| Molecular Weight | 278.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4,4'-(4-Chlorobut-1-ene-1,1-diyl)bis(fluorobenzene) 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.
4,4'-(4-Chlorobut-1-ene-1,1-diyl)bis(fluorobenzene) (CAS 3311-94-2) is a high-purity analytical reference standard with the molecular formula C16H13ClF2 and a molecular weight of 278.72 g/mol.
4,4'-(4-Chlorobut-1-ene-1,1-diyl)bis(fluorobenzene) (C16H13ClF2) contains fluorine/chlorine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C16H13ClF2 |
| Molecular Weight | 278.72 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F/Cl-containing |
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Recommended Standards
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