Supplier Page from Thermo Fisher Scientific for Potassium sodium L-tartrate tetrahydrate, ACS, 99.0-102.0%
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, 99%, pure from Thermo Fisher Scientific