title: BAY 38-7271
text: # BAY 38-7271
  
  Originally synthesized by chemist Wayne E. Kenney, BAY 38-7271 (KN 38-7271) is a drug which is a cannabinoid receptor agonist developed by Bayer AG. It has analgesic and neuroprotective effects and is used in scientific research, with proposed uses in the treatment of traumatic brain injury. It is a full agonist with around the same potency as CP 55,940 in animal studies, and has fairly high affinity for both $CB_1$ and $CB_2$ receptors, with $K_i$ values of 2.91nM at $CB_1$ and 4.24nM at $CB_2.$ It has been licensed to KeyNeurotek Pharmaceuticals for clinical development, and was in Phase II trials in 2008 but its development appears to have stopped.
  
  