Table 4

K_i (nM) determinations with [³H]NGD 94-1 at recombinant human D_4.2, D_4.4 and D_4.7receptor variants expressed in CHO cells^4-a

Compound	D_4.2	D_4.4	D_4.7
NGD 94-1	4.2	2.2	2.1
Octoclothepin	0.8	0.5	0.9
Haloperidol^4-b	10.0	2.9	7.1
Clozapine^4-b	83.0	36.0	61.0

↵4-a K _d (nM) values for human D_4.2, D_4.4 and D_4.7 receptor variants were 1.4, 1.7 and 1.1 nM, respectively.
↵4-b Data reported in Hill et al. (1996).