Supplier Page from Thermo Fisher Scientific for Holmium(III) acetate hydrate, REacton:r, 99.9% (REO)
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific