Supplier Page from Thermo Fisher Scientific for Sodium metabisulfite, 97+%, ACS reagent
2(2-Ethoxyethoxy)ethanol, 98+% from Thermo Fisher Scientific
3-Ethoxy-2-cyclohexen-1-one, 99% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific