Tiletamine is a dissociative anesthetic drug belonging to the arylcyclohexylamine class, with chemical formula C12H17NOS. It is quite similar to the popular recreational drug ketamine, and is also Schedule III in the United States. It is used by veterinarians in operations on animals. It comes compounded with the benzodiazepine zolazepam and is marketed under the name Telazol.

Chemical structure (sorry, arylcyclohexylamines are hard to draw):

  H   H  H
   \ /  /
H   C--C-H H
 \ /    \ /
  C      C-H  S
 / \    /   /  \
H   C--C---C    C--H
   //   \  \\  //
   O  H--N  C--C--H
         |   \
      H--C--H H