Supplier Page from Thermo Fisher Scientific for Aluminum slug, 3.175mm (0.125in) dia x 6.35mm (0.25in) length, 99.99% (metals basis)
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific