Supplier Page from Thermo Fisher Scientific for Benzenesulfonic acid, tech. ca 75% w/w aq. soln
2(2-Ethoxyethoxy)ethanol, 98+% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl benzoate, 99+% from Thermo Fisher Scientific
Fluorobenzene, 99% from Thermo Fisher Scientific