In March 2017, the EMCDDA and Europol examined the available information on the new psychoactive substance N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl) isobutyramide, commonly known as 4-fluoroisobutyrylfentanyl (4F-iBF), through a joint assessment. The two organisations launched a data collection on this substance for the preparation of a Joint Report as stipulated by Article 5.1 of the Council Decision. The Joint Report was submitted to the Council, the Commission and the European Medicines Agency on 3 July 2017.