Supplier Page from Thermo Fisher Scientific for Chromium(III) oxide, Puratronic:r, 99.97% (metals basis)
4-Ethylaniline, 99+% from Thermo Fisher Scientific
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethanethiol, 99+% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific