ChemInform Abstract: Synthesis and Binding Properties of MK‐801 Isothiocyanates: (+)‐3‐ Isothiocyanato‐5‐methyl‐10,11‐dihydro‐5H‐dibenzo(a,d)cyclohepten‐5,10 ‐ imine Hydrochloride: A New, Potent and Selective Electrophilic Affinity Ligand for the NMDA Receptor‐Coupled Phencyclidine Binding Site.