Supplier Page from Thermo Fisher Scientific for Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)iron(III), recrystallized, 99.9% (metals basis)
4-Isopropylbenzoic acid, 98+% from Thermo Fisher Scientific
Allopurinol, 98% from Thermo Fisher Scientific
D-Cystine, 98% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific