Supplier Page from Thermo Fisher Scientific for Triphenylphosphine dibromide, 96%
1-Heptanol, 98% from Thermo Fisher Scientific
2-Ethylhexanoic acid, 99% from Thermo Fisher Scientific
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific