[epmaybe]

I thought this was interesting: https://patents.google.com/patent/DE102007009888A1/en?q=s-ke... https://patents.google.com/patent/US20130236573A1/en

Also the racemic intranasal ketamine was already patented: https://patents.google.com/patent/US20070287753A1/en?q=s-ket...