1-Ethyl-3-fluorobenzene CAS 696-39-9
| CAS No. | 696-39-9 |
| Molecular Formula | C8H9F |
| Molecular Weight | 124.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Ethyl-3-fluorobenzene (CAS 696-39-9), molecular formula C8H9F and molecular weight 124.16 g/mol, is a CATO reference standard with documented purity and traceability.
1-Ethyl-3-fluorobenzene (C8H9F) contains fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H9F |
| Molecular Weight | 124.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
Related Ethyl Standards
- 1-Ethyl-4-fluorobenzene (CAS 459-47-2)
- 2-Fluorobenzene-1,4-diamine (CAS 14791-78-7)
- 4-Fluorobenzene-1,3-diamine (CAS 6264-67-1)
- 5-Fluorobenzene-1,3-diamine (CAS 372-41-8)
- 2-Fluorobenzene-1,3-diol (CAS 103068-40-2)
- 2-Fluorobenzene-1,4-diol (CAS 55660-73-6)
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Recommended Standards
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