Supplier Page from Thermo Fisher Scientific for Hydrogen tetrachloroaurate(III) hydrate, Premion:r, 99.995% (metals basis), Au 49% min
2(2-Ethoxyethoxy)ethanol, 98+% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific