g/L at 2 g/L EZE feed) (LC ≈ 12-14 wt.% and LE ≈ 70-80%) (Figure ). The EZE aqueous solubility was determined in-house to be 0.01 g/L (Table ). With further increase in EZE feed, solubility was decreased and remained in the range of 0.4 -0.7 g/L for all the tested ratios except for A-pPrOzi-A, where apparent solubility significantly dropped to 0.02 g/L. No clear correlation between compatibility estimation and formulation results was observed.