3,5-Dibromo-4-methylbenzoic acid CAS 67973-32-4
| CAS No. | 67973-32-4 |
| Molecular Formula | C8H6Br2O2 |
| Molecular Weight | 293.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dibromo-4-methylbenzoic acid (CAS 67973-32-4), molecular formula C8H6Br2O2 and molecular weight 293.94 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, 3,5-Dibromo-4-methylbenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 293.94 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).
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.
CATO manufactures 3,5-Dibromo-4-methylbenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6Br2O2 |
| Molecular Weight | 293.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1976 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,5-Dibromo-2-methylbenzoic acid (CAS 100958-94-9)
- 3,5-Dibromo-4-methoxybenzaldehyde (CAS 108940-96-1)
- 2,6-Dibromo-4-methylbenzoic acid (CAS 128733-74-4)
- 3,4-Dibromo-5-methylbenzoic acid (CAS 1564638-18-1)
- 3,5-Dibromo-N'-hydroxybenzene-1-carboximidamide (CAS 1937230-53-9)
- 1-(2,4-Dibromo-6-hydroxyphenyl)ethan-1-one (CAS 669767-20-8)
- 1-(2,6-Dibromo-4-hydroxyphenyl)ethanone (CAS 861296-70-0)
- 1-(3,5-Dibromo-2-hydroxyphenyl)ethanone (CAS 22362-66-9)
Recommended Standards
- 3,5-Dibromo-2-methoxybenzaldehyde (CAS 61657-65-6)
- 3,5-Dibromobenzohydrazide (CAS 610258-34-9)
- 3,5-Dibromo-2-hydroxy-4-methylbenzaldehyde (CAS 311318-65-7)
- 3,5-Dibromophenyl acetate (CAS 909389-74-8)
- 4-Hydrazinyl-6,7-dimethylquinoline hydrochloride (CAS 1173260-79-1)
- 32281-36-0 NSC149690 thieno[2,3-f]benzothiophene-4,8-dione {Benzo[1,2-b:4,5-b]dithiophene-4,8-dione} (CAS 32281-36-0)
- 5,6-Dimethoxyisoindoline (CAS 114041-16-6)
- tert-Butyl 2-(hydroxymethyl)-7-azaspiro[3.5]nonane-7-carboxylate (CAS 1356476-27-1)
- 7-Iodo-1H-indazol-6-ol (CAS 1190314-62-5)
- 1-((4-Fluorophenyl)sulfonyl)-2-((3-methylbenzyl)thio)-4,5-dihydro-1H-imidazole (CAS 868217-70-3)
- 3,5-Dimethoxybenzofuran-2-carboxylic acid (CAS 104796-30-7)
- Cinacalcet Impurity 14 (CAS 1217809-88-5)
- 1-(1-Benzofuran-2-yl)-3-(dimethylamino)prop-2-en-1-one (CAS 112677-18-6)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com