Supplier Page from Thermo Fisher Scientific for Trifluoromethanesulfonic anhydride, 98+%
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific