2-Bromo-4,5-difluorobenzaldehyde CAS 476620-54-9
| CAS No. | 476620-54-9 |
| Molecular Formula | C7H3BrF2O |
| Molecular Weight | 221.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-4,5-difluorobenzaldehyde (CAS 476620-54-9) is a high-purity analytical reference standard with the molecular formula C7H3BrF2O and a molecular weight of 221.00 g/mol.
Owing to a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system, 2-Bromo-4,5-difluorobenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 221.00 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C7H3BrF2O |
| Molecular Weight | 221.00 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, water (slightly soluble) |
| 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.) | 2025 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 3-Bromo-2,5-difluorobenzaldehyde (CAS 112279-64-8)
- 3-Bromo-4,5-difluorobenzaldehyde (CAS 1143502-70-8)
- 2-Bromo-3,5-difluorobenzaldehyde (CAS 1232407-50-9)
- 3-Bromo-2,4-difluorobenzaldehyde (CAS 1326714-93-5)
- 4-Bromo-3,5-difluorobenzaldehyde (CAS 135564-22-6)
- 2-Bromo-4,6-difluorobenzaldehyde (CAS 154650-59-6)
- 4-Bromo-1-(difluoromethyl)-1H-pyrrole-2-carbonitrile (CAS 1559067-57-0)
- 2-Bromo-3,4-difluorobenzaldehyde (CAS 1578156-21-4)
Recommended Standards
- 2-Bromo-3,6-difluorobenzaldehyde, 97% (CAS 934987-26-5)
- 2-Iodo-1H-pyrrole-3-carbaldehyde (CAS 35302-92-2)
- 2-Amino-4-iodopyrimidine (CAS 815610-16-3)
- 2-Iodo-3-hydroxypyridine (CAS 40263-57-8)
- cis-4-Methyl-1,2-3,6-tetrahydrophthalic Anhydride (CAS 1694-82-2)
- (R)-7,7-Dimethyl-6-oxo-1,2,5-dithiazocane-4-carboxylic acid (CAS 128620-82-6)
- N-(5-((2-Amino-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)-2-(trifluoromethyl)benzamide (CAS 868975-09-1)
- Tert-butyl 2-[(7s)-5-amino-2,8-dioxo-3,9-diazatricyclo[8.4.0.0,3,7]tetradeca-1(14),10,12-trien-9-yl]acetate (CAS 1137496-23-1)
- Ethyl 6H-furo[2,3-e]indole-7-carboxylate (CAS 1447607-58-0)
- 2-(3,4-Dimethoxyphenyl)-N-(4-fluorophenyl)thiazole-4-carboxamide (CAS 400080-54-8)
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