Supplier Page from Thermo Fisher Scientific for Thymolphthalein, 0.05% w/v solution in ethanol
Emodin, 95%, tech from Thermo Fisher Scientific
Epichlorohydrin, 99% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific