2-bromo-4-(chloromethyl)-1-methylbenzene CAS 68120-34-3
| CAS No. | 68120-34-3 |
| Molecular Formula | C8H8BrCl |
| Molecular Weight | 219.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-bromo-4-(chloromethyl)-1-methylbenzene (CAS 68120-34-3) is a high-purity analytical reference standard with the molecular formula C8H8BrCl and a molecular weight of 219.51 g/mol.
Based on its molecular formula C8H8BrCl, 2-bromo-4-(chloromethyl)-1-methylbenzene contains chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 219.51 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.
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 | C8H8BrCl |
| Molecular Weight | 219.51 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.) | 1976 |
| Halogen Content | Cl/Br-containing |
Related bromo Standards
- 2-Bromo-5-chloro-m-xylene (CAS 103724-99-8)
- 3-Bromo-5-methylbenzyl chloride (CAS 1056893-13-0)
- 1-Bromo-4-chloro-2-ethylbenzene (CAS 1160573-89-6)
- 2-Bromo-4-chloro-1,3-dimethylbenzene (CAS 1208077-17-1)
- 1-Bromo-3-(chloromethyl)-2-methylbenzene (CAS 1261449-18-6)
- 2-Bromo-1-(chloromethyl)-3-methylbenzene (CAS 1261520-36-8)
- 4-Bromo-2-chloro-1-ethylbenzene (CAS 1310948-67-4)
- 2-Bromo-4-chloro-1-ethylbenzene (CAS 1345036-19-2)
Recommended Standards
- 2-Bromo-1-chloro-4-ethylbenzene (CAS 289039-24-3)
- 4-(Bromomethyl)-2-chloro-1-methylbenzene (CAS 647037-49-8)
- 2-(Bromomethyl)-4-chloro-1-methylbenzene (CAS 869721-21-1)
- 4-Bromo-1-(chloromethyl)-2-methylbenzene (CAS 24078-15-7)
- 2-Aminocyclohexane-1-carboxylic acid hydrochloride (CAS 1384430-90-3)
- N-((1H-pyrazol-3-yl)methyl)-4-chloro-3-fluoroaniline (CAS 1157625-61-0)
- 3-Hydroxy-5-methylpicolinaldehyde (CAS 1211523-05-5)
- Ethyl (2Z)-2-chloro-2-[2-(3,5-dimethylphenyl)hydrazin-1-ylidene]acetate (CAS 154313-12-9)
- 4-(Trimethylammonium)methylphenylboronicacidbromidesalt (CAS 373384-20-4)
- (1R)-1-(4-fluorophenyl)prop-2-enylamine (CAS 688362-77-8)
- Dicyclohexylamine (S)-2-(((benzyloxy)carbonyl)amino)-5-(cyclohexyloxy)-5-oxopentanoate (CAS 111479-43-7)
- Benzyl (3-(5-chloro-2-oxo-3-phenylindolin-3-yl)propyl)carbamate (CAS 194798-26-0)
- Methyl 2-(benzyloxy)-1-naphthoate (CAS 512786-26-4)
- D-β-Asp9-Tirzepatide (CAS CATO-CPTD788932)
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