Supplier Page from Thermo Fisher Scientific for Citric acid monohydrate, 99.5%, for analysis
1-Ethynyl-1-cyclohexanol, 99+% from Thermo Fisher Scientific
4-Fluoroanisole, 99% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific