4-(4-Bromo-2-methylphenyl)-4-oxobutanoic acid CAS 898767-28-7
| CAS No. | 898767-28-7 |
| Molecular Formula | C11H11BrO3 |
| Molecular Weight | 271.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(4-Bromo-2-methylphenyl)-4-oxobutanoic acid 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.
4-(4-Bromo-2-methylphenyl)-4-oxobutanoic acid (CAS 898767-28-7) is a high-purity analytical reference standard with the molecular formula C11H11BrO3 and a molecular weight of 271.11 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 4-(4-Bromo-2-methylphenyl)-4-oxobutanoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 271.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-(4-Bromo-2-methylphenyl)-4-oxobutanoic acid 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 | C11H11BrO3 |
| Molecular Weight | 271.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
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Recommended Standards
- 4-(3-Bromo-4-methylphenyl)-4-oxobutanoic acid (CAS 62903-07-5)
- 4-(6-bromopyridine-2-carbonyl)morpholine (CAS 892548-20-8)
- 4-(3-Bromo-2-oxopropyl)phenyl acetate (CAS 56071-69-3)
- 4-(Allyloxy)-2-bromo-5-methoxybenzaldehyde (CAS 428496-25-7)
- 1-(4-Amino-6-chloro-3-pyridyl)ethanone (CAS 1393559-79-9)
- (S)-1-Cyclopropyl-4,4,4-trifluorobutan-1-amine (CAS 1704824-89-4)
- 3-Bromo-1H-indazol-6-amine (CAS 52347-72-5)
- 4-(tert-Butoxycarbonyl)-5-methylmorpholine-3-carboxylic acid (CAS 1691751-18-4)
- 1-(2-Methyl-benzyl)-piperazinehydrochloride (CAS 435345-16-7)
- Tert-butyl 5,6-dimethoxyspiro[indene-1,4'-piperidine]-1'-carboxylate (CAS 1026372-06-4)
- Ethyl 5-amino-1-(2-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 1019009-68-7)
- Olmesartan Impurity 10 (CAS 4437-70-1)
- 3-(((Benzyloxy)carbonyl)amino)-3-(4-chlorophenyl)propanoic acid (CAS 773867-63-3)
- Myelin Basic Protein (85-99) Peptide Antagonist (CAS 444305-16-2)
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