1H-Imidazo[4,5-b]pyrazin-5-ol CAS 856345-70-5

Purity 97%+In StockPharmaceutical Standards
CAS No.856345-70-5
Molecular FormulaC5H4N4O
Molecular Weight136.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1H-Imidazo[4,5-b]pyrazin-5-ol CAS 856345-70-5 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 1H-Imidazo[4,5-b]pyrazin-5-ol (CAS 856345-70-5), a certified reference material (molecular formula C5H4N4O, MW 136.11 g/mol) for analytical method development and quality control.

Owing to an amide group, a hydroxyl group, an ether linkage, 1H-Imidazo[4,5-b]pyrazin-5-ol is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 136.11 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 FormulaC5H4N4O
Molecular Weight136.11 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
CAS Registry Year (est.)1987
Nitrogen Atoms4

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