Supplier Page from Thermo Fisher Scientific for 2,3,4-Trihydroxybenzaldehyde, 98%
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl carbazate, 97% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific