Supplier Page from Thermo Fisher Scientific for Cobalt slug, 6.35mm (0.25in) dia x 12.7mm (0.50in) length, 99.95% (metals basis)
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ethyl 4-bromocrotonate, 75%, tech from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific