Supplier Page from Thermo Fisher Scientific for (2R,3R)-(-)-2,3-Butanediol, 98+%, 99+% ee
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific