yeaaa its just kind of common sense in the scene not to go posting on public forums asking for sources. nobody will help you out. its really not that hard to get involved if your really curious, it just takes a bunch of time literally researching this shit online.
first, no vendor will ship you illegals within the US, second, most of the rando companies and sites you find are scams plain and simple, third, nobody will help you out in this industry unless you invest some time discussing and learning, get on the forums. there is a reason why its so underground, it helps with harm reduction. and I agree, nobody should be able to acquire unknown research chemicals without having some concrete ideas of what they are dealing with. use tradekey and cas # of chems to search with. go to sos and see the reviews to see if people are legit.
I just gave you more than enough info to get out there and find it all on your own, so dont go asking for sources like this anymore.