Table 1

Affinity of amisulpride for molecularly identified human dopamine receptor subtypes in vitro

Drug	K_{i (nM)}
	D₂ Receptor Family		D₁Receptor Family
	D₂	D₃	D₄	D₁	D₅
Amisulpride	2.8	3.2	>1000	>1000	>1000
Haloperidol	0.60	2.3	3.8	27^1-a	48^1-a
Clozapine	80	230	89	141^1-a	250^1-a

Studies of radioligand binding to human dopamine receptor subtypes transfected into CHO (D₂ receptor family) or Sf9 (D₁ receptor family) cells were performed as described in “Materials and Methods”. Data represent the mean of at least two independent experiments performed in duplicate.

↵1-a , Data taken from Sunahara et al. (1991).