i hate to be the one that tells you this, but some rando cooking tryptamines in garage is not the kind of “research chemicals” that legit drug research uses. these are called CRO, contract research organizations and that would be Enamine ltd most of the time, they can make a wide array of compounds on demand. legit labs can get whatever they need (with appropriate paperwork), either as material for in vivo/in vitro testing or analytical standard

sometimes people get paid for participating in phase 1 trials, not the other way around