(1S,2R)-1-(bromomethyl)-2-methyl-cyclopropane CAS 1821759-46-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1821759-46-9
Molecular FormulaC5H9Br
Molecular Weight149.03 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(1S,2R)-1-(bromomethyl)-2-methyl-cyclopropane CAS 1821759-46-9 chemical structure

Description

(1S,2R)-1-(bromomethyl)-2-methyl-cyclopropane (CAS 1821759-46-9), molecular formula C5H9Br and molecular weight 149.03 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C5H9Br, (1S,2R)-1-(bromomethyl)-2-methyl-cyclopropane contains bromine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 149.03 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 FormulaC5H9Br
Molecular Weight149.03 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1995
Halogen ContentBr-containing

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