Supplier Page from Thermo Fisher Scientific for 12-Crown-4, 98%
18-beta-Glycyrrhetinic acid, 98+% from Thermo Fisher Scientific
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific
Propionaldehyde, 99+% from Thermo Fisher Scientific