We had a Bluelighter who used to post about U-47700 but I haven't seen him around lately. I believe some states in the U.S. have banned it. The fentanyl analogues have been outlawed as well. That's one I wouldn't want to mess with because so many people have been dying. You might want to do some research on your own. We can't make suggestions on which RC opioid would be good for you so I'm closing this, sorry dear.