Supplier Page from Thermo Fisher Scientific for (+)-Dimethyl 2,3-O-isopropylidene-D-tartrate, 97%
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific