4-Methyl-2H-1,4-Benzixazin- 3(4H)-One CAS 21744-84-3

Purity 97%+In StockPharmaceutical Standards
CAS No.21744-84-3
Molecular FormulaC9H9NO2
Molecular Weight163.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Methyl-2H-1,4-Benzixazin- 3(4H)-One CAS 21744-84-3 chemical structure

Description

4-Methyl-2H-1,4-Benzixazin- 3(4H)-One (CAS 21744-84-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H9NO2. Molecular weight: 163.17 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC9H9NO2
Molecular Weight163.17 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963
Nitrogen Atoms1

Recommended Standards

Why CATO?