Supplier Page from Thermo Fisher Scientific for Sodium, plasma standard solution, Specpure:r, Na 10,000µg/mL
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific