Thiothinone
Thiothinone, also known as β-ketomethiopropamine or βk-methiopropamine is a stimulant that is the β-keto-substituted analog of methiopropamine and has been sold online as a designer drug. It is structurally related to methcathinone however the phenyl group has been substituted for thiophene instead.
Thiothinone was also reported to be a pyrolysis product of methiopropamine.