5-Methyl-2(1H)-pyrazinone CAS 20721-17-9

Purity 97%+In StockPharmaceutical Standards
CAS No.20721-17-9
Molecular FormulaC5H6N2O
Molecular Weight110.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methyl-2(1H)-pyrazinone CAS 20721-17-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 110.11 g/mol gives 5-Methyl-2(1H)-pyrazinone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Methyl-2(1H)-pyrazinone (CAS 20721-17-9) is a high-purity analytical reference standard with the molecular formula C5H6N2O and a molecular weight of 110.11 g/mol.

The molecular framework of 5-Methyl-2(1H)-pyrazinone (C5H6N2O) is characterized by an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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

CATO manufactures 5-Methyl-2(1H)-pyrazinone under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC5H6N2O
Molecular Weight110.11 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)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1962
Nitrogen Atoms2

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