The 299 H1R top-children "surviving" the 200 nM cut-offs, were proposed here for additional studies (Supplementary Materials / 299derivatives.dwar, and 299-derivatives.pse). The 413NN2 lead top-child predicting ~ 0.009 nM for H1R and ~ >200 nM affinities for H2R, H3R, H4R and Kv1.5 (Figure , red crossed circle), was selected to compare their targeted nearby amino acids to those of fexofenadine and fexofenadine-derived 842NN (Table ). A comparison of DWBEL and ADV 3D conformers between 842NN and 413NN2 confirmed very similar or identical docked conformations, respectively (Figure ).