Supplier Page from Thermo Fisher Scientific for Zinc slug, 6.35mm (0.25in) dia x 6.35mm (0.25in) length, Puratronic:r, 99.993% (metals basis)
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific