Supplier Page from Thermo Fisher Scientific for Sulfur trioxide pyridine complex, technical, 48-50% active SO3
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethylcyclohexane, 99+% from Thermo Fisher Scientific
Eugenol, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific