1-BROMO-2-ETHYL-4-FLUOROBENZENE 1781676-21-8 CAS 1781676-21-8
| CAS No. | 1781676-21-8 |
| Molecular Formula | C8H8BrF |
| Molecular Weight | 203.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-BROMO-2-ETHYL-4-FLUOROBENZENE 1781676-21-8.
1-BROMO-2-ETHYL-4-FLUOROBENZENE 1781676-21-8 (CAS 1781676-21-8) is a high-purity analytical reference standard with the molecular formula C8H8BrF and a molecular weight of 203.05 g/mol.
Based on its molecular formula C8H8BrF, 1-BROMO-2-ETHYL-4-FLUOROBENZENE 1781676-21-8 contains fluorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C8H8BrF |
| Molecular Weight | 203.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1994 |
| Halogen Content | F/Br-containing |
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