Supplier Page from Thermo Fisher Scientific for trans-2-Pentenoic acid, 90+%, remainder other isomers
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Fluorobenzene, 99% from Thermo Fisher Scientific