Fig. 2. Methoxycarbonyl-etomidate (MOC-etomidate) concentration response curve for loss of righting reflex (LORR) in tadpoles. Each data point represents the results from a single tadpole. The curve is a fit of the data set yielding an EC50of 8 ± 2 μm. All tadpoles recovered when removed from methoxycarbonyl-etomidate and returned to fresh water.