Supplier Page from Thermo Fisher Scientific for 2,2'-Isopropylidenebis[(4S)-4-tert-butyl-2-oxazoline], 99%, 98% e.e
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific