Supplier Page from Thermo Fisher Scientific for Copper slug, 3.175mm (0.125in) dia x 3.175mm (0.125in) length, 99.995% (metals basis)
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific