2-(4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)-1-(piperazin-1-yl)ethan-1-one CAS 1584556-03-5

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)-1-(piperazin-1-yl)ethan-1-one.

2-(4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)-1-(piperazin-1-yl)ethan-1-one (CAS 1584556-03-5) is a high-purity analytical reference standard with the molecular formula C11H17ClN4O and a molecular weight of 256.73 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 2-(4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)-1-(piperazin-1-yl)ethan-1-one is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 256.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

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

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

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