1,1-Dibromo-2-(chloromethyl)-2-methylcyclopropane CAS 71600-39-0
| CAS No. | 71600-39-0 |
| Molecular Formula | C5H7Br2Cl |
| Molecular Weight | 262.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,1-Dibromo-2-(chloromethyl)-2-methylcyclopropane.
1,1-Dibromo-2-(chloromethyl)-2-methylcyclopropane (CAS 71600-39-0), molecular formula C5H7Br2Cl and molecular weight 262.37 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to chlorine/bromine substitution, 1,1-Dibromo-2-(chloromethyl)-2-methylcyclopropane is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 262.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C5H7Br2Cl |
| Molecular Weight | 262.37 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl/Br-containing |
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Recommended Standards
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