3,4-Dibromobenzaldehyde CAS 74003-55-7
| CAS No. | 74003-55-7 |
| Molecular Formula | C7H4Br2O |
| Molecular Weight | 263.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 263.91 g/mol gives 3,4-Dibromobenzaldehyde distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3,4-Dibromobenzaldehyde (CAS 74003-55-7) is a high-purity analytical reference standard with the molecular formula C7H4Br2O and a molecular weight of 263.91 g/mol.
Owing to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 3,4-Dibromobenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 263.91 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).
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 | C7H4Br2O |
| Molecular Weight | 263.91 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.) | 1978 |
| Halogen Content | Br-containing |
Related Dibromobenzaldehyde Standards
Recommended Standards
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- 1-Chloro-3-fluoro-2-(trichloromethoxy)benzene (CAS 1404194-75-7)
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- Tert-butyl 7-(2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate (CAS 2133298-72-1)
- (3S,4R)-3-fluoro-4-methoxy-pyrrolidine;hydrochloride (CAS 2306253-19-8)
- 1-(7-Bromobenzofuran-2-yl)butan-1-amine (CAS 1494947-85-1)
- 2-Methoxy-N-(o-tolyl)benzamide (CAS 97597-47-2)
- 4-ANDROSTEN-17β, 18-DIOL-3-ONE (CAS 7150-17-6)
- TRAF6 Peptide trifluoroacetate salt (CAS 852805-92-6)
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