Sorry, can't say I know if your top left would work or not and I'd rather not guess because it might be totally wrong... it certainly looks like a real drug, if that helps
Thanks for the CXP.... I think that if we start from MXE (3-meo-2-oxo-pce) and ketamine (2-chloro-2-oxo-pcm), the pcm/pce/pcp/... determines the basic duration/potency/binding, the 2-oxo lowers potency and duration to something more manageable and the 3-meo pushes the experience towards something more positive and affects binding to a certain degree. Not sure about the 2-chloro, but perhaps that is responsible for K-holes being easy to achieve?
Were beta fluorine 2c-xs ever considered? The C-F bond is similar to the C-H bond, you'd get rid of dimerization problems, .. Or is there some reason they are likely a bad idea:
What about bk-2c-x-nboh? Again, no dimerization, probably a dose between 10-20 mg, ...: