Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate CAS 21271-35-2

Purity 97%+In StockPharmaceutical Standards
CAS No.21271-35-2
Molecular FormulaC19H19N3O4
Molecular Weight353.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate CAS 21271-35-2 chemical structure

Description

The occurrence of Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate (CAS 21271-35-2), a certified reference material (molecular formula C19H19N3O4, MW 353.37 g/mol) for analytical method development and quality control.

Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 353.37 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.

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.

As a certified reference material (CRM), Ethyl 2-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)butanoate 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 FormulaC19H19N3O4
Molecular Weight353.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963
Nitrogen Atoms3

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