Oxiracetam is substituted with a further hydroxy team at R4, which happens to be a chiral Centre with the molecule. Oxiracetam is presumably manufactured as a racemate of its enantiomers. Oxiracetam is structurally analogous to piracetam, which lacks the R4 hydroxy substitution of oxiracetam.This drug is often a CNS stimulant frequently prescribed