1-(2-Bromoethyl)pyrazole CAS 119291-22-4

Purity 97%+In StockPharmaceutical Standards
CAS No.119291-22-4
Molecular FormulaC5H7BrN2
Molecular Weight175.03 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(2-Bromoethyl)pyrazole CAS 119291-22-4 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

1-(2-Bromoethyl)pyrazole (CAS 119291-22-4) is a high-purity analytical reference standard with the molecular formula C5H7BrN2 and a molecular weight of 175.03 g/mol.

Based on its molecular formula C5H7BrN2, 1-(2-Bromoethyl)pyrazole contains a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 175.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 FormulaC5H7BrN2
Molecular Weight175.03 g/mol
AppearanceWhite to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1991
Halogen ContentBr-containing
Nitrogen Atoms2

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