K_d values of some Local Anesthetics in kKv 1.5 cardiac potassium channels
(highest values reveal less "cardiotoxicity")

Local Anesthetic	Racemic	S(-)	R(+)
Bupivacaine	8 mM	27 mM	4.1 mM
Ropivacaine	-	81 mM	32 mM
IQB-9302	21 mM	65 mM	19 mM