Janet Leigh was a person.
JDTic is a selective , long-acting -LRB- `` inactivating '' -RRB- antagonist of the κ-opioid receptor -LRB- KOR -RRB- .. selective. binding selectivity. antagonist. antagonist ( pharmacology ). κ-opioid receptor. kappa opioid receptor. JDTic is a 4-phenylpiperidine derivative , distantly related structurally to analgesics such as pethidine and ketobemidone , and more closely to the MOR antagonist alvimopan .. antagonist. antagonist ( pharmacology ). 4-phenylpiperidine. 4-phenylpiperidine. pethidine. pethidine. ketobemidone. ketobemidone. alvimopan. alvimopan. In addition , it is structurally distinct from other KOR antagonists such as norbinaltorphimine .. norbinaltorphimine. norbinaltorphimine