Compound Ki (NE) nM Ki (PR3) nM Solubility (PBS, μM) Plasma Protein Binding (% free) Plasma Stability (t½ minutes)
CE-2072 0.24 24 <10 1.0 >100
AI-158 0.29 6.2 69.0 18.0 >100
Table 1: Selected Biochemical and Physical Properties of the Serine Elastase Inhibitor (SEIs), CE-2017 and AI-158.