3-Bromo-5-chlorotoluene CAS 329944-72-1
| CAS No. | 329944-72-1 |
| Molecular Formula | C7H6BrCl |
| Molecular Weight | 205.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Bromo-5-chlorotoluene is closely related to chlorine/bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-Bromo-5-chlorotoluene (CAS 329944-72-1), a certified reference material (molecular formula C7H6BrCl, MW 205.48 g/mol) for analytical method development and quality control.
3-Bromo-5-chlorotoluene (C7H6BrCl) contains chlorine/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. 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.
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 | C7H6BrCl |
| Molecular Weight | 205.48 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 |
| 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.) | 2025 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
- 2-Bromo-5-chlorotoluene (CAS 14495-51-3)
- 2-Bromo-1-chloro-3-methylbenzene (CAS 69190-56-3)
- 2-Bromo-1-chloro-4-methyl-benzene (CAS 57310-39-1)
- 2-Bromo-4-chlorotoluene (CAS 27139-97-5)
- 2-Bromo-6-chlorotoluene (CAS 62356-27-8)
- 1-Bromo-2-chloro-3-methylbenzene (CAS 97329-43-6)
- 4-Bromo-2-chlorotoluene (CAS 89794-02-5)
- 4-Bromo-3-chlorotoluene (CAS 6627-51-6)
Recommended Standards
- 4-Bromobenzyl Chloride (CAS 589-17-3)
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- Desmopressin Impurity 32 (CAS CATO-C4X-221532)
- 2,2-Difluoro-1-(4-fluorophenyl)ethyl diethyl phosphate (CAS 191014-12-7)
- 2-Cyclopropyl-6-phenylpyrimidin-4(1H)-one (CAS 651043-20-8)
- [(3,4-difluorophenyl)methyl][2-(dimethylamino)ethyl]amine (CAS 926270-89-5)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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