2,4,5-Tribromotoluene CAS 3278-88-4
| CAS No. | 3278-88-4 |
| Molecular Formula | C7H5Br3 |
| Molecular Weight | 328.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2,4,5-Tribromotoluene (C7H5Br3) is characterized by bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
2,4,5-Tribromotoluene (CAS 3278-88-4), molecular formula C7H5Br3 and molecular weight 328.83 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H5Br3 |
| Molecular Weight | 328.83 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| 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.) | 1957 |
| Halogen Content | Br-containing |
Recommended Standards
- 2,3-Dibromobenzyl bromide (CAS 93701-31-6)
- 1,3,5-Tribromo-2-methylbenzene (CAS 6320-40-7)
- 1,3-Dibromo-2-(bromomethyl)benzene (CAS 93701-32-7)
- 2,4-dibromo-1-(bromomethyl)benzene (CAS 64382-92-9)
- N-(5-(2,4-Dimethylphenyl)-1,3,4-oxadiazol-2-yl)-3-methylisoxazole-5-carboxamide (CAS 953143-33-4)
- 5-((tert-Butoxycarbonyl)amino)-2-(pyridin-2-yl)thiazole-4-carboxylic acid (CAS 1270034-32-6)
- 6-Oxo-2-(pyrazin-2-yl)-1,6-dihydropyrimidine-5-carboxylic acid (CAS 1239747-64-8)
- N-(6-Nitronaphthalen-2-yl)acetamide (CAS 102877-11-2)
- 2-(4-Fluorophenyl)-5-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol (CAS 1710195-14-4)
- 2-Ethyl-3-hydroxyhexyl 2-Methylpropanoate (CAS 74367-31-0)
- 2,4-Dichloro-6-(6-(1,1-difluoroethyl)pyridin-2-yl)-1,3,5-triazine (CAS 1446507-64-7)
- 2,4-Dichloro-3-fluorobenzyl chloride (CAS 1807053-37-7)
- 1-(2-(4-(((Furan-2-ylmethyl)thio)methyl)piperidin-1-yl)-2-oxoethyl)pyrrolidine-2,5-dione (CAS 1396771-60-0)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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