Supplier Page from Thermo Fisher Scientific for Tris(hydroxymethyl)aminomethane, 99.8%, for analysis, biochemical grade
Ethyl carbazate, 97% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific