Supplier Page from Thermo Fisher Scientific for Potassium bromide, ultra dry, 99.9% (metals basis)
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific