Supplier Page from Thermo Fisher Scientific for Chromium(III) nitrate nonahydrate, 99.99% min (metals basis)
1-Fluoro-4-nitrobenzene, 99% from Thermo Fisher Scientific
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific