It had been at first developed by Pfizer in 2009 being an analgesic medication but was in no way pursued for human use. In 2012, it was learned as an component in artificial cannabinoid blends in Japan, in addition to a linked compound AB-PINACA, which had not Earlier been claimed. http://research-chemical-for-sal04048.designi1.com/22758169/5-easy-facts-about-5f-pcn-drug-described