Supplier Page from Thermo Fisher Scientific for Copper rod, 5mm (0.2in) dia, Puratronic:r, 99.999% (metals basis)
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific