Supplier Page from Thermo Fisher Scientific for Polyvinylsulfuric acid potassium salt, approx. M.W. 175,000
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific