5-(1H-Pyrazol-4-yl)oxazole CAS 1936036-55-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1936036-55-3
Molecular FormulaC6H5N3O
Molecular Weight135.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-(1H-Pyrazol-4-yl)oxazole CAS 1936036-55-3 chemical structure

Description

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.

CATO supplies 5-(1H-Pyrazol-4-yl)oxazole (CAS 1936036-55-3), a certified reference material (molecular formula C6H5N3O, MW 135.12 g/mol) for analytical method development and quality control.

Owing to an amide group, a hydroxyl group, an ether linkage, an aromatic ring system, 5-(1H-Pyrazol-4-yl)oxazole is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 135.12 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).

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 FormulaC6H5N3O
Molecular Weight135.12 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Nitrogen Atoms3

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