hey, these and others were developed before jdtic, jdtic is the first orally active kappa antagonist. There are one or two others one was developed by lily and one by astra zeneca i believe these three are the only ones which showed enough potential to be tested in humans...unfortunately they are even less available than jdtic in terms of information and sourcing the actual compound.
Cosma said he has a source. Was that legit? Is there enough interest to get a buy rolling?