Supplier Page from Thermo Fisher Scientific for Hydrobromic acid, for analysis, ca. 48% solution in water
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific
Eugenol, 99% from Thermo Fisher Scientific