Supplier Page from Thermo Fisher Scientific for Toluidine Blue O, Certified, 65% min dye content
2,6-Lutidine, 99% from Thermo Fisher Scientific
2-Heptanol, 99+% from Thermo Fisher Scientific
D(+)-Melibiose monohydrate, 99+% from Thermo Fisher Scientific
Phenylselenol, 98% from Thermo Fisher Scientific