1-(2-Bromo-4,5-dimethoxyphenyl)ethan-1-one CAS 74746-10-4
| CAS No. | 74746-10-4 |
| Molecular Formula | C10H11BrO3 |
| Molecular Weight | 259.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(2-Bromo-4,5-dimethoxyphenyl)ethan-1-one.
1-(2-Bromo-4,5-dimethoxyphenyl)ethan-1-one (CAS 74746-10-4), molecular formula C10H11BrO3 and molecular weight 259.10 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-(2-Bromo-4,5-dimethoxyphenyl)ethan-1-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 259.10 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.
As a certified reference material (CRM), 1-(2-Bromo-4,5-dimethoxyphenyl)ethan-1-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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.) | 1978 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-(5-Bromo-2-hydroxy-3-methoxyphenyl)propan-2-one (CAS 1003988-41-7)
- 4-Bromo-1-cyclopentyl-1h-pyrazole-3-carboxylic acid (CAS 1006451-45-1)
- 2-(4-Bromo-3-cyclopropyl-1H-pyrazol-1-yl)propanoic acid (CAS 1006490-27-2)
- 4-Bromo-1-cyclopentyl-1h-pyrazole-5-carboxylic acid (CAS 1006494-04-7)
- 2-Bromo-N-(2-methoxyethyl)isonicotinamide (CAS 1008505-65-4)
- 1-(2-Bromo-5-hydroxy-4-methoxyphenyl)propan-2-one (CAS 1017059-61-8)
- 1-(2-Bromo-4-hydroxy-5-methoxyphenyl)-2-propanone (CAS 1017083-10-1)
- 3-(2-bromo-4-methoxyphenyl)propanoic acid (CAS 103038-45-5)
Recommended Standards
- 1-(2-Bromo-3,4-dimethoxyphenyl)ethanone (CAS 857561-90-1)
- 1-(2-Bromo-4,6-dimethoxyphenyl)ethan-1-one (CAS 861086-27-3)
- (S)-Methyl 2-amino-3-(5-bromopyridin-2-yl)propanoate dihydrochloride (CAS 938083-70-6)
- 1-(3-Bromo-4-hydroxy-5-methoxyphenyl)-2-propanone (CAS 205826-79-5)
- (6-Chloro-5-nitro-4-trifluoromethyl-pyridin-2-yl)-dimethyl-amine (CAS 1160995-05-0)
- (S)-3-(Boc-Amino)-γ-butyrolactone (CAS 104227-71-6)
- 1-(1-Ethyl-5-fluoro-3-methyl-1H-pyrazol-4-yl)-N-((1-(2-fluoroethyl)-1H-pyrazol-3-yl)methyl)methanamine hydrochloride (CAS 1856089-20-7)
- 2-Propylisoquinolin-1(2H)-one (CAS 83696-69-9)
- 3-Isopropyl-1-methyl-4-(propan-2-ylidene)-1,4,6,7-tetrahydrothiopyrano[4,3-c]pyrazole (CAS 1956366-05-4)
- 2-(oxan-3-yl)acetaldehyde (CAS 1050493-75-8)
- 6-Amino-1-(2-morpholinoethyl)pyrimidine-2,4(1H,3H)-dione (CAS 924834-96-8)
- 4-Amino-1-(2,6-difluorophenyl)pyrrolidin-2-one (CAS 1155574-01-8)
- 1-(3-Bromophenyl)cyclobutanamine Hydrochloride (CAS 1228879-34-2)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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