Supplier Page from Thermo Fisher Scientific for Sodium sulfide hydrate, 60-64%, extra pure, scales
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific
Flavone, 99+% from Thermo Fisher Scientific