Supplier Page from Thermo Fisher Scientific for Calcium oxalate monohydrate, Puratronic:r, 99.9985% (metals basis), (excluding 25ppm max alkali earths)
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl acrylate, 99.5%, stabilized from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, 99%, pure from Thermo Fisher Scientific