I had read on a website on unusual molecules about 3-methylindole, and the site said that the common synth was KOH/NaOH and the egg white, I had done that but failed to obtain any precipitate, so I just decided to try gassing/HCl in the hope that i would work, I have little experience in organic chem at the moment, but I am learning. I don't see why it cannot work though.