Used as an internal standard in analytical chemistry, particularly in mass spectrometry, to accurately detect and quantify nitrofuran metabolites in food samples such as meat, fish, and honey. Its primary role is to ensure analytical precision by compensating for variations during sample preparation and instrument analysis. Due to its deuterated structure, it closely mimics the behavior of non-labeled AMOZ while being distinguishable by detection systems, making it essential for monitoring illegal use of nitrofurans in animal husbandry.