Furazan
![Skeletal formula of furazan with numbering convention for substituent groups](/Images/godic/202501/14/Furazan_numbering4908.png")
![Skeletal formula of furazan](/Images/godic/202501/14/Furazan-3D-balls4908.png")
![Space-filling model of the furazan molecule](/Images/godic/202501/14/Furazan-3D-spacefill4908.png")
Furazan, or 1,2,5-oxadiazole, is an heterocyclic aromatic organic compound consisting of a five-atom ring containing 1 oxygen and 2 nitrogen atoms. The furazan ring system is also found in the steroid furazabol. Furazan and its derivatives are obtained from the oxime derivatives of 1,2-diketones.