1,3,4-Tribromo-2,5-dimethylbenzene CAS 117572-80-2
| CAS No. | 117572-80-2 |
| Molecular Formula | C8H7Br3 |
| Molecular Weight | 342.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1,3,4-Tribromo-2,5-dimethylbenzene (CAS 117572-80-2), molecular formula C8H7Br3 and molecular weight 342.85 g/mol, is a CATO reference standard with documented purity and traceability.
1,3,4-Tribromo-2,5-dimethylbenzene (C8H7Br3) 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. 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.
Physical & Chemical Properties
| Molecular Formula | C8H7Br3 |
| Molecular Weight | 342.85 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.) | 1990 |
| Halogen Content | Br-containing |
Related Tribromo Standards
- 1,2,5-Tribromo-3-ethylbenzene (CAS 2383186-91-0)
- 3,4,5-Tribromo-2,6-dimethylpyridine (CAS 1379303-06-6)
- 2,4,6-Tribromo-5-methylpyridin-3-amine (CAS 126325-52-8)
- 1,2,4-Tribromo-5-methoxybenzene (CAS 95970-10-8)
- 2,3,6-Tribromo-4-methylphenol (CAS 36776-51-9)
- 2,4,6-Tribromo-3-methylphenol (CAS 4619-74-3)
- 2,4,5-Tribromo-1-isopropyl-1H-imidazole (CAS 863485-29-4)
- 2,4,5-Tribromo-1-propyl-1H-imidazole (CAS 31250-78-9)
Recommended Standards
- 1,3-Dibromo-2-(2-bromoethyl)benzene (CAS 1026805-11-7)
- 1-BROMO-2,3-BIS(BROMOMETHYL)BENZENE (CAS 127168-82-5)
- Etoricoxib Impurity 2 (CAS 316149-01-6)
- (2,2,2-Tribromoethyl)benzene (CAS 72591-21-0)
- N'-(2-(3,5-Difluorophenyl)-2-hydroxyacetyl)-2-ethyl-4-methoxy-3-methylbenzohydrazide (CAS 1181770-80-8)
- Niaproof<SUP>®</SUP> 4 (CAS 139-88-8)
- Cis-Diethyl Stilbestrol (CAS 22610-99-7)
- N-Cyclopropyl-4-hydroxy-2-methylbenzamide (CAS 1695438-98-2)
- 5-iodo-2-(trifluoromethyl)pyridin-4-ol (CAS 1027818-89-8)
- 2-Ethoxy-2-(oxolan-3-yl)acetonitrile (CAS 1496926-11-4)
- 5-amino-4-methylpentan-1-ol hydrochloride (CAS 1864058-14-9)
- (E)-3-(benzo[d][1,3]dioxol-5-yl)-1-(4-(3-chlorophenyl)piperazin-1-yl)prop-2-en-1-one (CAS 349418-07-1)
- 1-Phenyl-2-(p-tolylthio)butane-1,3-dione (CAS 92512-74-8)
- Peptide YY (3-36) (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 126339-09-1)
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