Supplier Page from Thermo Fisher Scientific for Tetrabutylammonium hydroxide, 40 wt.% (1.5M) solution in water
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
4-Ethylphenol, 97% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific