Most psychedelics are sold as 'research chemicals'. Back in the 60's, 70's and 80's there was a chemist named Alexander Shulgin who was completely facinated by the human pyche. He worked in a lab he built on his farm developing chemicals with similar structures to the neurotransmiters serotonin, dopamine and epinephrine.
Since none of these chemicals are illegal (yet), they can be legaly sold but not for ingesting. If you are interesting in readingmore about them, chek out
www.erowid.org. Start by readingup on '2C-E'. 2C-E is from the phenethylamine family of psychedelics. Another class of psychedelics are the tryptamines such as psylocybin (the active chemical in 'magic mushrooms') and its relatives