Supplier Page from Thermo Fisher Scientific for Zinc naphthenate, µ=67% in mineral spirits (10% Zn)
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethanethiol, 99+% from Thermo Fisher Scientific