Supplier Page from Thermo Fisher Scientific for Sulfur trioxide pyridine complex, technical, 48-50% active SO3
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl benzoate, 99+% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific