0.5 mM, 0.75 mM, 1.0 mM and 1.25 mM, see 3.2.4.1) 4. 1.5 mL or 2.0 mL Eppendorf Safe Lock Tubes™ or 15 mL vessels 5. Black 96-well microtiter plate (flat bottom, e.g. from Greiner Bio-One) 6. DMSO 7. Multiwell-spectrofluorometer (Infinite® M1000Pro, Tecan) 8. Lipase/esterase stock solution 2.4 Synthesis of p-Nitrophenyl Esters and