Diarylmethyl piperazine compounds are disclosed having utility as exogenous receptor combinant species for binding with receptors such as delta, mu, sigma, and/or kappa receptors. Compounds of the invention may be employed as conjugates in agonist/antagonist pairs for transductional monitoring and assays of neurotransmitter function, and also variously exhibit therapeutic utility, including mediating analgesia, and possessing utitlity for the treatment of diarrhea, urinary incontinence, mental illness, drug and alcohol addiction/overdose, lung edema, depression, asthma, emphysema, and apnea, cognitive disorders, and gastrointestinal disorders.
Opioid compounds