Supplier Page from Thermo Fisher Scientific for Eaton's Reagent, P{2}O{5} ca 7.5% w/w
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
DL-Menthol, 99% from Thermo Fisher Scientific
Hydroquinone, 99% from Thermo Fisher Scientific
L(-)-Menthol, 99.5% from Thermo Fisher Scientific