Ranitidine N-oxide is used as a pharmaceutical reference standard in impurity profiling stability studies analytical method development validation and quality control testing of ranitidine drug substances and finished pharmaceutical products.

Its primary purpose is to enable the accurate identification and quantification of the oxidative degradation impurity formed during the manufacture or storage of ranitidine thereby ensuring product quality stability and regulatory compliance.

Ranitidine N-oxide is an oxidation product of ranitidine formed by the conversion of a nitrogen atom to its corresponding N-oxide and it is commonly used as a reference material in chromatographic and other analytical methods to evaluate the purity and stability of ranitidine-containing pharmaceuticals.