Supplier Page from Thermo Fisher Scientific for 2,3-O-Isopropylidene-D-glyceraldehyde, 50% w/w in dichloromethane
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific