In September 2017, the EMCDDA and Europol examined the available information on the new psychoactive substance 2-methoxy-N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]acetamide (methoxyacetylfentanyl), 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 19 December 2017.