Supplier Page from Thermo Fisher Scientific for Zinc foil, 0.01µ+0.0025mm (0.0004µ+0.0001in) thick, 99.9% (metals basis)
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific