3-Bromo-5-ethoxy-4-methoxybenzaldehyde CAS 81805-97-2
| CAS No. | 81805-97-2 |
| Molecular Formula | C10H11BrO3 |
| Molecular Weight | 259.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C10H11BrO3, 3-Bromo-5-ethoxy-4-methoxybenzaldehyde contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 259.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
3-Bromo-5-ethoxy-4-methoxybenzaldehyde (CAS 81805-97-2) is a high-purity analytical reference standard with the molecular formula C10H11BrO3 and a molecular weight of 259.10 g/mol.
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 | C10H11BrO3 |
| Molecular Weight | 259.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-(5-Bromo-2-hydroxy-3-methoxyphenyl)propan-2-one (CAS 1003988-41-7)
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Recommended Standards
- 3-Bromo-4-propoxybenzoic acid (CAS 849509-45-1)
- 3-Bromo-9-fluorenone (CAS 2041-19-2)
- 3-Bromo-4-isopropoxybenzoic Acid (CAS 213598-20-0)
- 4-(2-Bromoethoxy)-3-methoxybenzaldehyde (CAS 99070-23-2)
- (E)-[(4-Methylphenyl)methylidene]({2-[(E)-[(4-methylphenyl)methylidene]amino]ethyl})amine (CAS 552859-12-8)
- Methyl 7-fluorobenzo[b]thiophene-2-carboxylate (CAS 550998-54-4)
- Methyl 2-amino-5-bromo-4-nitrobenzoate (CAS 174566-52-0)
- n-{2-[5-(2-chloroacetyl)thiophen-2-yl]ethyl}acetamide (CAS 184582-26-1)
- Bis(2-chloroethyl) carbonate (CAS 623-97-2)
- (S)-2-Amino-4-(methylthio)-N-(quinolin-8-yl)butanamide (CAS 587832-38-0)
- 2-{[(1,3-dioxo-2,3-dihydro-1H-inden-2-ylidene)methyl]amino}benzoic acid (CAS 1023505-31-8)
- 1-Chloro-2-(3-methylbut-3-en-1-yl)benzene (CAS 731772-03-5)
- 4-bromo-2,3-dihydro-1-benzofuran-3-one (CAS 1020966-78-2)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
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