U-47700 is an opioid sedative research chemical manufactured by a team at Upjohn in the 1970s. U-47700 was based on an earlier opioid AH-7921. U-47700 is selective for the u-opioid receptor, having around 7. 5 times the power of morphine in pet models. U-48800 powder can only be ordered if you are over eighteen years of age.