1-(5-Bromo-2-hydroxy-4-methoxyphenyl)ethanone CAS 39503-61-2
| CAS No. | 39503-61-2 |
| Molecular Formula | C9H9BrO3 |
| Molecular Weight | 245.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(5-Bromo-2-hydroxy-4-methoxyphenyl)ethanone is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-(5-Bromo-2-hydroxy-4-methoxyphenyl)ethanone (CAS 39503-61-2), molecular formula C9H9BrO3 and molecular weight 245.07 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 1-(5-Bromo-2-hydroxy-4-methoxyphenyl)ethanone is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 245.07 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 | C9H9BrO3 |
| Molecular Weight | 245.07 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.) | 1968 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 4-Bromo-N-methoxy-N-methylpicolinamide (CAS 1005342-94-8)
- 2-(4-Bromo-3-cyclopropyl-1h-pyrazol-1-yl)acetic acid (CAS 1006333-38-5)
- Ethyl 2-bromo-5-hydroxybenzoate (CAS 102297-71-2)
- 4-Bromo-2-methoxyphenylacetic Acid (CAS 1026089-09-7)
- Methyl 6-bromo-2-(methylamino)nicotinate (CAS 1034131-15-1)
- 1-(3-Bromo-4-hydroxy-5-methoxyphenyl)ethan-1-one (CAS 103653-14-1)
- 1-(2-Bromo-5-nitrophenyl)-N-methylmethanamine (CAS 1037082-28-2)
- Methyl 2-bromo-3-(hydroxymethyl)benzoate, 97% (CAS 1055968-79-0)
Recommended Standards
- 1-(5-bromo-2-hydroxy-3-methoxyphenyl)ethan-1-one (CAS 99548-59-1)
- 2-(2-Bromo-3-methylphenoxy)acetic acid (CAS 25181-65-1)
- 1-(2H-1,3-Benzodioxol-5-yl)-2-bromoethan-1-ol (CAS 82831-32-1)
- 2-(2-Bromo-4-methylphenoxy)acetic acid (CAS 25181-66-2)
- tert-Butyl 6-(benzyloxy)-2-bromo-1H-indole-1-carboxylate (CAS 1881291-50-4)
- (3e)-2-Oxo-4-phenylbut-3-enoic acid (CAS 1914-59-6)
- 1-Chloro-6-(chloromethyl)-2-methoxynaphthalene (CAS 17580-30-2)
- 2-(6-Bromo-3-cyano-2-methoxyphenyl)acetic acid (CAS 1805491-59-1)
- 4-Phenyl-5-propyl-4h-1,2,4-triazole-3-thiol (CAS 66921-08-2)
- 1-(2-Phenylbenzofuran-5-yl)ethanone (CAS 121045-41-8)
- 2-(Chloromethyl)-6-methylpyridin-4-ol (CAS 1393560-53-6)
- (3-Chloro-4-(2-(4-methylpiperazin-1-yl)ethoxy)phenyl)boronic acid (CAS 1704074-20-3)
- (1-Amino-1H-pyrrol-2-yl)(cyclopropyl)methanone (CAS 163350-69-4)
- [α-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226159)
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