6-Bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene CAS 119999-22-3
| CAS No. | 119999-22-3 |
| Molecular Formula | C15H21Br |
| Molecular Weight | 281.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 6-Bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (CAS 119999-22-3), a certified reference material (molecular formula C15H21Br, MW 281.23 g/mol) for analytical method development and quality control.
6-Bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (C15H21Br) contains bromine substitution, an aromatic ring 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C15H21Br |
| Molecular Weight | 281.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
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Recommended Standards
- 6-(Bromomethyl)-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthalene (CAS 119435-90-4)
- 3-Phenyl-6-(trifluoromethyl)pyridine-2-acetic acid (CAS 1214346-65-2)
- 6-Methoxy-2-(4-trifluoromethylbenzoyl)pyridine (CAS 1187167-65-2)
- 3-Phenyl-5-(trifluoromethyl)pyridine-2-acetic acid (CAS 1214354-62-7)
- 2-(4-Butoxybenzoyl)-5-methylpyridine (CAS 1187170-60-0)
- Methyl 2-((1-phenyl-1H-imidazol-2-yl)thio)propanoate (CAS 478046-07-0)
- Ethyl 3-bromo-5-ethoxy-4-((4-fluorobenzyl)oxy)benzoate (CAS 1706447-31-5)
- 3-(3,4-Difluorophenoxy)propanenitrile (CAS 950644-34-5)
- 2-((6-(3,5-Dimethyl-1H-pyrazol-1-yl)pyridazin-3-yl)oxy)acetic acid (CAS 890014-09-2)
- 3,5-Diphenylpyrazin-2-amine (CAS 41270-70-6)
- 18:1 BDP (S,S) (CAS 1246298-28-1)
- Ethyl 3-methyl-1,2,4-thiadiazole-5-carboxylate (CAS 76162-56-6)
- 3-Fluoro-4-methyl-5-(trifluoromethyl)benzenesulfonyl chloride (CAS 1706451-99-1)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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