4-Bromo-2,6-dimethylbenzoic Acid CAS 74346-19-3
| CAS No. | 74346-19-3 |
| Molecular Formula | C9H9BrO2 |
| Molecular Weight | 229.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Bromo-2,6-dimethylbenzoic Acid (CAS 74346-19-3), molecular formula C9H9BrO2 and molecular weight 229.07 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, 4-Bromo-2,6-dimethylbenzoic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 229.07 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.
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 | C9H9BrO2 |
| Molecular Weight | 229.07 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1978 |
| Halogen Content | Br-containing |
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Recommended Standards
- 4-Bromo-2,5-dimethylbenzoic Acid (CAS 276677-03-3)
- 4-Bromo-2-cyclopropoxyphenol (CAS 485402-61-7)
- 4-Bromo-2,3-dimethylbenzoic Acid (CAS 5613-26-3)
- 4-Bromo-2-methoxybenzimidamide (CAS 814255-40-8)
- 2-Amino-2-(2-fluorophenyl)propanoic acid (CAS 320-58-1)
- 4-Methoxy-5-methyl-1H-pyrazol-3(2H)-one (CAS 190257-20-6)
- Methyl 2-chloro-4-(trifluoromethyl)nicotinate (CAS 196708-48-2)
- 1,2-Dichloro-1,1,2,2-tetraphenyldisilane (CAS 15288-62-7)
- 3-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde (CAS 1001020-14-9)
- 2-Hydroxy-2-(piperidin-2-yl)acetic acid (CAS 1467400-87-8)
- 3-(p-Tolyl)thiophene (CAS 16939-05-2)
- n-(2-(1h-Pyrazol-1-yl)ethyl)benzo[d]oxazol-2-amine (CAS 1291625-07-4)
- (S)-5-Bromo-2,3-dihydro-1H-inden-1-ol (CAS 1270284-15-5)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
Why CATO?
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