1-Bromo-3-methyl-2-butene CAS 870-63-3

Purity >90%In StockPharmaceutical Standards
CAS No.870-63-3
Molecular FormulaC5H9Br
Molecular Weight149.03 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Bromo-3-methyl-2-butene CAS 870-63-3 chemical structure

Description

As a certified reference material (CRM), 1-Bromo-3-methyl-2-butene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

1-Bromo-3-methyl-2-butene (CAS 870-63-3) is a high-purity analytical reference standard with the molecular formula C5H9Br and a molecular weight of 149.03 g/mol.

1-Bromo-3-methyl-2-butene (C5H9Br) contains bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

Physical & Chemical Properties

Molecular FormulaC5H9Br
Molecular Weight149.03 g/mol
Purity>90%
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.)1957
Halogen ContentBr-containing

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