N&PD Moderators: Skorpio | someguyontheinternet
No offence but I can hardly understand what's going on here, could you make this a flat drawing so I can figure it out?!
^ Has anyone ever tested compounds where the n-phenethyl of fentanyl is replaced with n-methyl, or where the n-methyl of meperidine is replaced with n-phenethyl (or n-phenylisopropyl) group ?