2-Bromo-4-(4-methylphenyl)-1-butene CAS 731772-22-8
| CAS No. | 731772-22-8 |
| Molecular Formula | C11H13Br |
| Molecular Weight | 225.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H13Br, 2-Bromo-4-(4-methylphenyl)-1-butene contains bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 225.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Bromo-4-(4-methylphenyl)-1-butene (CAS 731772-22-8), molecular formula C11H13Br and molecular weight 225.12 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 | C11H13Br |
| Molecular Weight | 225.12 g/mol |
| 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.) | 1986 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-bromo-2-(pent-4-en-1-yl)benzene (CAS 1119036-64-4)
- 1-Bromo-4-(3-methoxypropoxy)butane (CAS 1178726-19-6)
- 1-Bromo-2-methyl-1,2,3,4-tetrahydronaphthalene (CAS 1249229-98-8)
- 2-Bromo-3-(2-ethylphenyl)-1-propene (CAS 1263365-87-2)
- 5-Bromo-6,7,8,9-tetrahydro-5h-benzo[7]annulene (CAS 128364-39-6)
- 1-Bromo-2-(3-methylbut-3-en-1-yl)benzene (CAS 130955-17-8)
- 1-Bromo-4-(pent-4-en-1-yl)benzene (CAS 134336-90-6)
- 2-Bromo-4-(cyclopropylmethyl)-1-methylbenzene (CAS 1369849-40-0)
Recommended Standards
- 2-Bromo-4-(3-methylphenyl)-1-butene (CAS 731772-19-3)
- 2-Bromo-6,7,8,9-tetrahydro-5H-benzo[7]annulene (CAS 51490-23-4)
- 2-Bromo-3-(3,4-dimethylphenyl)-1-propene (CAS 951892-08-3)
- 3,5-Difluoro-4-(trifluoromethyl)benzamide (CAS 261944-94-9)
- Keto Tiagabine Tosylate (CAS 161014-56-8)
- (2,3-Dichloro-4-methoxyphenyl)boronic acid (CAS 1190219-72-7)
- Bivalirudin Impurity 1 (CAS 72378-50-8)
- (E)-5-(3,3-dimethylaziridin-2-yl)-3-methylpent-2-en-1-yl acetate (CAS 53415-98-8)
- 1-(3,4-Dichlorophenyl)-2,2,2-trifluoroethan-1-one (CAS 125733-43-9)
- 312693-17-7 4-Methoxybenzylzinc chloride, 0.5M in tetrahydrofuran MFCD01319885 (CAS 312693-17-7)
- (S)-2-Amino-4-(4-chlorophenyl)butanoic acid (CAS 157684-01-0)
- 2-(5-(4-Ethylphenyl)-1H-pyrazol-1-yl)ethanol (CAS 1707375-35-6)
- n-(Benzyloxy)-2-methoxyacetamide (CAS 1211398-30-9)
- D-[Thr]7-Liraglutide (CAS CATO-C4X-199237)
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