Supplier Page from Thermo Fisher Scientific for L(+)-Tartaric acid, disodium salt, dihydrate, 99+%, ACS reagent
1,2-Ethanedithiol, 95% from Thermo Fisher Scientific
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific