Oxazolone

Oxazolone is a chemical compound and functional group, with the molecular formula C₃H₃NO₂. It was named in-line with the Hantzsch–Widman nomenclature and is part of a large family of oxazole based compounds. There are a total of 5 structural isomers of oxazolone; 3 according to the location of the carbonyl group and 2 more according to the location of the double bound C=X (with X= N or C):