2-bromo-3-chloro-naphthalene CAS 71436-67-4
| CAS No. | 71436-67-4 |
| Molecular Formula | C10H16BrCl |
| Molecular Weight | 251.59 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.
2-bromo-3-chloro-naphthalene (CAS 71436-67-4), molecular formula C10H16BrCl and molecular weight 251.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H16BrCl, 2-bromo-3-chloro-naphthalene contains chlorine/bromine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 251.59 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.
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 | C10H16BrCl |
| Molecular Weight | 251.59 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl/Br-containing |
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- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
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