4,4,5,5-tetradeuterio-3-[(E)-(5-nitrofuran-2-yl)methylideneamino]-1,3-oxazolidin-2-one

This compound is a deuterium-labeled derivative of furazolidone, an antibiotic and antiprotozoal agent. It is primarily used as an internal standard in analytical chemistry for the quantification of furazolidone via mass spectrometry.