Based on the information provided by the European Monitoring Centre for Drug and Drug Addiction, these synthetic opioids have been related to overdoses and deaths in Europe and North America. One of these opioids is the U-47700. A few months ago, U-47700 was scheduled in the U.S. and ...
However, in this case, more than one hour elapsed between the ambulance call and the death confirmation; therefore, it is more likely that the method for diclofenac determination used by the authors was not sensitive enough. Fels et al. [74] reported two cases of U-47700 poisoning in which...