Supplier Page from Thermo Fisher Scientific for Niobium foil, 0.25mm (0.01in) thick, annealed, 99.8% (metals basis)
4'-Fluoroacetophenone, 99% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific