Supplier Page from Thermo Fisher Scientific for Aluminum slug, 6.35mm (0.25in) dia x 12.7mm (0.5in) length, Puratronic:r, 99.9998% (metals basis)
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific