3-Bromo-2,4-dimethylphenol CAS 74571-81-6
| CAS No. | 74571-81-6 |
| Molecular Formula | C8H9BrO |
| Molecular Weight | 201.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromo-2,4-dimethylphenol (CAS 74571-81-6), molecular formula C8H9BrO and molecular weight 201.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 3-Bromo-2,4-dimethylphenol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.06 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).
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), 3-Bromo-2,4-dimethylphenol 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 | C8H9BrO |
| Molecular Weight | 201.06 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 4-Bromo-1-cyclobutylpyrazole (CAS 1002309-50-3)
- 4-Bromo-5-methylbenzene-1,2-diamine (CAS 102169-44-8)
- 5-Bromo-3-ethylpyridin-2-amine (CAS 1037253-14-7)
- 5-Bromo-2,3-dimethylpyridin-4-amine (CAS 1038989-17-1)
- 3-Bromo-2-methyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazole (CAS 1043920-65-5)
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- 2-Bromo-6-methylbenzyl Alcohol (CAS 1055969-07-7)
- 3-Bromo-N,N-dimethylpyridin-2-amine (CAS 1060801-39-9)
Recommended Standards
- 3-Bromo-1-(1-methylcyclopropyl)-1H-pyrazole (CAS 2468058-16-2)
- 3-Bromo-2,5-dimethylphenol (CAS 72638-60-9)
- 3-Amino-5-bromo-4,6-dimethylpyridine (CAS 890092-29-2)
- 3-Bromo-2,6-dimethylpyridin-4-amine (CAS 33259-24-4)
- 2-Morpholino-2-(2-thienyl)ethylamine (CAS 851176-37-9)
- 1,2-Dimethyl-1-cyclopentene (CAS 765-47-9)
- 5-(2-Fluoropyridin-3-yl)-1H-pyrrole-3-carbaldehyde (CAS 928325-26-2)
- Rel-(1R,2S,3S,4R,5R)-2,4-bis(benzyloxy)-6,8-dioxabicyclo[3.2.1]octan-3-ol (CAS 33208-48-9)
- 2-(2-Bromoethyl)oxirane (CAS 13287-42-8)
- 1-Cyclobutylidenepropan-2-one (CAS 67223-98-7)
- tert-Butyl Alcohol-OD (CAS 3972-25-6)
- Cinepazide Impurity 5 (CAS 1078-64-4)
- Ethyl 2-(2-chloroacetamido)-5,6-dihydro-4h-cyclopenta[d]thiazole-4-carboxylate (CAS 1219827-54-9)
- Tirzepatide Impurity 25 X TFA Salt (CAS CATO-C4X-324025)
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