Supplier Page from Thermo Fisher Scientific for Chromium(III) oxide, Puratronic:r, 99.97% (metals basis)
2-Ethylaniline, 98% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific