Supplier Page from Thermo Fisher Scientific for Thymolphthalein, 0.05% w/v solution in ethanol
Dulcitol, 99+% from Thermo Fisher Scientific
Eicosanoic acid, 98% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific