5-Bromo-1,2,3-trimethylbenzene CAS 32591-43-8
| CAS No. | 32591-43-8 |
| Molecular Formula | C9H11Br |
| Molecular Weight | 199.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Bromo-1,2,3-trimethylbenzene (CAS 32591-43-8), molecular formula C9H11Br and molecular weight 199.09 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-1,2,3-trimethylbenzene (C9H11Br) contains bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Bromo-1,2,3-trimethylbenzene 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 | C9H11Br |
| Molecular Weight | 199.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| 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.) | 1966 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 4-Bromo-2-ethyl-1-methylbenzene (CAS 1161497-35-3)
- (R)-(1-Bromo-2-propyl)benzene (CAS 116724-02-8)
- 3-Bromo-5-ethyltoluene (CAS 1208075-19-7)
- 1-Bromo-3-ethyl-2-methylbenzene (CAS 1369886-45-2)
- (S)-(1-Bromo-2-propyl)benzene (CAS 147514-19-0)
- 2-Bromo-4-ethyl-1-methylbenzene (CAS 17070-97-2)
- 1-Bromo-2-propylbenzene (CAS 19614-14-3)
- 1-Bromo-1-phenylpropane, 97% (CAS 2114-36-5)
Recommended Standards
- 1-(Bromomethyl)-3,5-dimethylbenzene (CAS 27129-86-8)
- 3-Phenylpropyl Bromide (CAS 637-59-2)
- 2-Bromo-1-ethyl-3-methylbenzene (CAS 65232-55-5)
- 2,5-dichloro-4-methylthiophene-3-carbaldehyde (CAS 210098-00-3)
- 3-(Chlorosulfonyl)-4-iodobenzoic acid (CAS 402934-49-0)
- 3,3-dimethylcyclobutan-1-ol (CAS 54166-17-5)
- 2,2-Dichloro-n-(1-cyanocyclopentyl)acetamide (CAS 78734-69-7)
- 2-methyl-1-benzothiophene-6-carboxylic acid (CAS 18781-41-4)
- Trifluoroethylα-(trifluoromethyl)acrylate (CAS 91520-39-7)
- Methyl 2-(N-ethylmethanesulfonamido)benzoate (CAS 928708-57-0)
- 3-(5-Chloro-2-methylbenzo[d]thiazol-3-ium-3-yl)propane-1-sulfonate hydrate (CAS 51981-33-0)
- (2R)-Ethylpyrrolidine HCl (CAS 460748-80-5)
- N-((2-chlorophenyl)carbamothioyl)benzamide (CAS 21258-05-9)
- Calcitonin C-Terminal Flanking Peptide (human) XTFA (CAS 85916-47-8（free base）)
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