Supplier Page from Thermo Fisher Scientific for Bromothymol Blue, ACS
Ergosterol, 98% from Thermo Fisher Scientific
Inositol, 98+% from Thermo Fisher Scientific
Iron(III) acetylacetonate, 99+% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific