1-Bromo-2-cyclopropylethyne CAS 57951-72-1

Purity 97%+In StockPharmaceutical Standards
CAS No.57951-72-1
Molecular FormulaC5H5Br
Molecular Weight145.00 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Bromo-2-cyclopropylethyne CAS 57951-72-1 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.

1-Bromo-2-cyclopropylethyne (CAS 57951-72-1), molecular formula C5H5Br and molecular weight 145.00 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 1-Bromo-2-cyclopropylethyne (C5H5Br) contains bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 145.00 g/mol, it falls into the low-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC5H5Br
Molecular Weight145.00 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1973
Halogen ContentBr-containing

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Why CATO?