Voltammetric determination of 6-mercaptopurine using a multiwall carbon nanotubes paste electrode in the presence of isoprenaline as a mediator

► The electrooxidation of 6-mercsptopurine was studied by modified paste electrode ► The kinetic parameters were also determined using the electrochemical approach ► The sensor was used for the determination of 6-mercsptopurine in real samples