c.f. the phenyltropane class of compounds when the tropane is drawn in a manner resembling other than the boat formation.
Phenmetrazine analogues or substituted phenmetrazines, acting as transporter releasing agents of dopamine and noradrenaline, as well as serotonin receptor agonists, also including the similar "phenylmorpholine" class
Nociceptive morpholine dopamine agonist substitution structure. The cyclohexane, at where the oxygen leads to the phenyl (in-between the one and two positions on the cyclohexane itself, not the bridge of the phenyl) also have variants in this class being either a shaded or wedged bond at said oxygen. This class, however, possesses an ubiquitous propyl "tail" on the cyclohexane nitrogen compared to the DRA phenmetrazine analogue category proper.
Substituted phenmetrazine 'dopaminergic nociceptives' i.e. "dopamine-receptor direct agonists"
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