2-Bromo-1-(4-methoxyphenyl)butan-1-one CAS 881-43-6
| CAS No. | 881-43-6 |
| Molecular Formula | C11H13BrO2 |
| Molecular Weight | 257.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 2-Bromo-1-(4-methoxyphenyl)butan-1-one (CAS 881-43-6), a certified reference material (molecular formula C11H13BrO2, MW 257.12 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 2-Bromo-1-(4-methoxyphenyl)butan-1-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 257.12 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.
Physical & Chemical Properties
| Molecular Formula | C11H13BrO2 |
| Molecular Weight | 257.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1957 |
| Halogen Content | Br-containing |
Related Bromo Standards
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Recommended Standards
- 2-Bromo-1-(4-methoxy-2,5-dimethylphenyl)ethan-1-one (CAS 879053-30-2)
- 2-bromo-1-[4-(propan-2-yloxy)phenyl]ethan-1-one (CAS 365572-08-3)
- 2-Bromo-1-(2-methoxy-5-methylphenyl)propan-1-one (CAS 854685-08-8)
- 2-Bromo-3-(2,4-dimethoxyphenyl)-1-propene (CAS 951891-09-1)
- 5-Bromo-3-(bromomethyl)pyridin-2-amine (CAS 769109-93-5)
- Cyclohexyl Cyclohexanecarboxylate (CAS 15840-96-7)
- 2-((2-chloro-4-(cyclopropylamino)pyrimidine-5-carbonyl)oxy)-4-(cyclopropylamino)pyrimidine-5-carboxylic acid (CAS CATO-C3D-262479)
- 5-((Trifluoromethyl)thio)indoline-2,3-dione (CAS 1344718-26-8)
- triphenylmethyl isothiocyanate (CAS 1726-94-9)
- Trimethylsilyl stearate (CAS 18748-91-9)
- AZD-PEG2-PFP (CAS 1807537-41-2)
- (1,3,3-Trimethylcyclohexyl)methanamine hydrochloride (CAS 1363405-49-5)
- 2-Amino-N-ethyl-N-(4-fluorobenzyl)acetamide (CAS 779288-68-5)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
Why CATO?
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