(4-bromo-1H-pyrazol-3-yl)methanol CAS 959756-34-4

Purity 97%+In StockPharmaceutical Standards
CAS No.959756-34-4
Molecular FormulaC4H9BrN2O
Molecular Weight181.03 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(4-bromo-1H-pyrazol-3-yl)methanol CAS 959756-34-4 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.

(4-bromo-1H-pyrazol-3-yl)methanol (CAS 959756-34-4), molecular formula C4H9BrN2O and molecular weight 181.03 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amide group, a hydroxyl group, an ether linkage, bromine substitution, (4-bromo-1H-pyrazol-3-yl)methanol is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 181.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

As a certified reference material (CRM), (4-bromo-1H-pyrazol-3-yl)methanol 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.

Physical & Chemical Properties

Molecular FormulaC4H9BrN2O
Molecular Weight181.03 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1987
Halogen ContentBr-containing
Nitrogen Atoms2

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Why CATO?