 Hydrazine is a precursor to several pharmaceuticals and pesticides.Often these applications involve conversion of hydrazine to heterocyclic rings such as pyrazoles and pyridazines.Examples of commercialized bioactive hydrazine derivatives include cefazolin, rizatriptan, anastrozole, fluconazole, metazachlor, metamitron, metribuzin, paclobutrazol, diclobutrazole, propiconazole, hydrazine sulfate, diimide, triadimefon, and dibenzoylhydrazine.