Most people don't realize this, but you can order a synthesis of just about any (legal) chemical with enough money. People do it for pharmaceutical or nootropic drugs sometimes in group buys. It's trivial if you have enough money to find some vaguely legal analog of a recreational drug, and order a synthesis of it. 2f-dck is a ketamine analog that I believe is still legal and reported to be very similar in effect, and I'd guess 2f-nendck is somewhat similar to that. Not that I'm suggesting anyone should, there are risks and it's not an easy process. It's just interesting how easily accessible it is if you have the right information.