3-Bromo-4-fluorobenzaldehyde CAS 77771-02-9
| CAS No. | 77771-02-9 |
| Molecular Formula | C7H4BrFO |
| Molecular Weight | 203.01 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.
3-Bromo-4-fluorobenzaldehyde (CAS 77771-02-9), molecular formula C7H4BrFO and molecular weight 203.01 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Bromo-4-fluorobenzaldehyde (C7H4BrFO) contains a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 203.01 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H4BrFO |
| Molecular Weight | 203.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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.) | 1979 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 4-Bromo-3-fluorobenzaldehyde (CAS 133059-43-5)
- 3-Bromo-2-fluorobenzaldehyde (CAS 149947-15-9)
- 3-Bromo-5-fluorobenzaldehyde (CAS 188813-02-7)
- 2-Bromo-3-fluorobenzaldehyde (CAS 891180-59-9)
- 2-Bromo-4-fluorobenzaldehyde (CAS 59142-68-6)
- 4-Bromo-2-fluorobenzaldehyde (CAS 57848-46-1)
- 2-Bromo-6-fluorobenzaldehyde (CAS 360575-28-6)
- 1-bromo-3-(trifluoromethyl)cyclobutane (CAS 2247103-30-4)
Recommended Standards
- Terephthaloyl Chloride (CAS 100-20-9)
- 4-Bromobenzoyl fluoride (CAS 72398-40-4)
- 6,7-dichloro-2,3-dihydro-1-benzofuran-3-one (CAS 1153450-05-5)
- 2-Chlorophenyloxoacetyl chloride (CAS 1159373-66-6)
- 2,3-Dimethyl-8-styrylimidazo[1,2-b]pyridazine (CAS 92449-34-8)
- 5-(Bromomethyl)furan-3-carbonitrile (CAS 157135-02-9)
- (2-Aminobenzo[d]thiazol-5-yl)boronic acid (CAS 590417-69-9)
- 703-80-0 0HAT270V6U 3-Acetylindole Ethanone, 1-(1H-indol-3-yl)- (9CI) Indol-3-yl methyl ketone Ketone, indol-3-yl methyl 5-21-08-00297 (Beilstein Handbook Reference) 3-Acetyl-1H-indole Acetyl-3-indole [French] AI3-51299 BRN 0122579 EINECS 211-875-5 NSC 47180 NSC 58084 Acetyl-3-indole UNII-0HAT270V6U (CAS 703-80-0)
- Methyl (2S,3S)-3-((2-chloro-5-fluoropyrimidin-4-yl)amino)bicyclo[2.2.2]octane-2-carboxylate (CAS 1509941-50-7)
- (4-Bromo-2,5-dihexylphenyl)boronic acid (CAS 122465-86-5)
- 4-Fluoro-N'-(1-(pyridin-2-yl)ethylidene)benzohydrazide (CAS 325990-63-4)
- n-(O-tolyl)tetrahydro-2h-thiopyran-4-amine (CAS 1156600-88-2)
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