Supplier Page from Thermo Fisher Scientific for Folinic acid, calcium salt pentahydrate, 95.0-105.0%
4-Ethylphenol, 97% from Thermo Fisher Scientific
Eicosanoic acid, 98% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific