5-Bromo-2,4-dimethylbenzoic acid CAS 842136-27-0
| CAS No. | 842136-27-0 |
| Molecular Formula | C9H9BrO2 |
| Molecular Weight | 229.07 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 5-Bromo-2,4-dimethylbenzoic acid.
5-Bromo-2,4-dimethylbenzoic acid (CAS 842136-27-0), molecular formula C9H9BrO2 and molecular weight 229.07 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Bromo-2,4-dimethylbenzoic acid (C9H9BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 229.07 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 5-Bromo-2,4-dimethylbenzoic 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 | 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.) | 1987 |
| Halogen Content | Br-containing |
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Recommended Standards
- 5-Bromo-2,3-dimethylbenzoic acid (CAS 5613-27-4)
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- 5-Bromo-2,2-dimethylbenzo[d][1,3]dioxole (CAS 73790-19-9)
- 5-Bromo-2-ethylbenzoicacid (CAS 439937-55-0)
- 2-Amino-5-(ethoxymethyl)-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one (CAS 2060062-51-1)
- N-Propyl-L-Z-Valinamide (CAS 861904-21-4)
- 5-Fluoro-2-methyl-1H-imidazole (CAS 71516-19-3)
- 3-(2,5-Dimethylphenyl)-2-methylpropiophenone (CAS 898794-74-6)
- 3-Bromo-6-fluoro-2-methoxybenzene-1-sulfonyl chloride (CAS 2091425-58-8)
- n-(3-Bromo-4-methoxyphenyl)-2-cyano-2-methylpropanamide (CAS 1355840-60-6)
- tert-Butyl cis-3-amino-4-hydroxypiperidine-1-carboxylate (CAS 1638759-83-7)
- 1-Benzyl-3-(2,4-dimethylphenyl)quinazoline-2,4(1H,3H)-dione (CAS 60942-87-2)
- 9-(2-Fluorobenzyl)-N-isopropyl-9H-purin-6-amine (CAS 101154-89-6)
- D-Leu14-Tirzepatide (CAS CATO-CPTD788920)
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