Supplier Page from Thermo Fisher Scientific for 1,3-Bis(diphenylphosphino)propane, 97%
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
Acetophenone, 98%, pure from Thermo Fisher Scientific
Dulcitol, 99+% from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific