2-Hydroxyethylhydrazine (HEH) is an organic compound with the formula C2H8N2O, featuring a hydroxyl group and a hydrazine functional group. It is primarily used as a reagent in various chemical syntheses and has been studied for its biological activities. As an intermediate, 2-hydroxyethylhydrazine exhibits potential applications in pharmaceuticals, agrochemicals, and polymer chemistry, owing to its reactive nature and ability to form more complex structures.