4-Bromo-p-terphenyl CAS 1762-84-1
| CAS No. | 1762-84-1 |
| Molecular Formula | C18H13Br |
| Molecular Weight | 309.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-p-terphenyl (C18H13Br) contains bromine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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).
CATO supplies 4-Bromo-p-terphenyl (CAS 1762-84-1), a certified reference material (molecular formula C18H13Br, MW 309.20 g/mol) for analytical method development and quality control.
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 | C18H13Br |
| Molecular Weight | 309.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bromo Standards
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- 2-Bromo-1,1':3',1''-terphenyl (CAS 1133796-49-2)
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- 6'-Bromo-4-methoxyspiro[cyclohexane-1,2'-inden]-1'(3'H)-one (CAS 1245515-16-5)
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- 3-Bromo-p-terphenyl (CAS 1762-87-4)
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Recommended Standards
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- PTACH, 98% (CAS 848354-66-5)
- 3-Bromo-4-hydroxy-6-trifluoromethylquinoline (CAS 1065087-84-4)
- 3-Methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,4-triazolo[4,3-a]pyridine (CAS 1231934-47-6)
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