Supplier Page from Thermo Fisher Scientific for Fluorescein isothiocyanate isomer I, 90%, pure
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
Ethanethiol, 99+% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific