The dissociation constants (nMolar values) for the binding of the D3 receptor selective compounds, WC 10, WC 21, WC 26 and WC 44, to human D2long, D3 and D4.4 dopamine receptors expressed in HEK 293 cells is presented as the mean ± S.E.M. for n ≥ 3 experiments. Values were derived from competitive radioligand binding experiments using 125I-IABN as the radioligand (Luedtke et al., 2000). Affinity and log P values are taken from Chu et al., 2005 and the descriptors in parentheses are how these compounds are designated in that publication.