1-[(E)-2-bromovinyl]-3,5-difluorobenzene CAS 1260683-99-5
| CAS No. | 1260683-99-5 |
| Molecular Formula | C8H5BrF2 |
| Molecular Weight | 219.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 219.03 g/mol gives 1-[(E)-2-bromovinyl]-3,5-difluorobenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-[(E)-2-bromovinyl]-3,5-difluorobenzene (CAS 1260683-99-5), molecular formula C8H5BrF2 and molecular weight 219.03 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to fluorine/bromine substitution, an aromatic ring system, 1-[(E)-2-bromovinyl]-3,5-difluorobenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 219.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H5BrF2 |
| Molecular Weight | 219.03 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Br-containing |
Related E Standards
- 1-(1-Bromovinyl)-4-chlorobenzene (CAS 89619-10-3)
- (E)-1-(2-Bromovinyl)-3-methoxybenzene (CAS 77150-94-8)
- (E)-1-(2-Bromovinyl)-4-methoxybenzene (CAS 6303-59-9)
- 1-(1-Bromovinyl)-2-methoxybenzene (CAS 203176-35-6)
- 1-(2-Bromovinyl)-4-methoxybenzene (CAS 27570-08-7)
- (E)-1-(2-Bromovinyl)-2,4-dimethylbenzene (CAS 1574365-89-1)
- (E)-1-(2-Bromovinyl)-3-nitrobenzene (CAS 115665-74-2)
- 1-(2-Bromovinyl)-4-nitrobenzene (CAS 13161-29-0)
Recommended Standards
- (1-(N,N-Dimethylsulfamoyl)-1H-pyrazol-4-yl)boronic acid (CAS 1036990-41-6)
- 5-Bromo-2-methoxyresorcinol (CAS 133932-61-3)
- 3-Iodoaniline (CAS 626-01-7)
- 5-Bromo-1,3-difluoro-2-vinylbenzene (CAS 160975-98-4)
- 7-Bromo-8-methyl-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine (CAS 2169906-55-0)
- (1-Cyclopentyl-2,2,2-trifluoroethyl)benzene (CAS 1186195-02-7)
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- Lead(II) 2-ethylhexanoate (40.5%-42.5% Pb) (CAS 301-08-6)
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