Supplier Page from Thermo Fisher Scientific for Fluorescein isothiocyanate isomer I, 90%, pure
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific