Supplier Page from Thermo Fisher Scientific for (R)-alpha-Methyltryptophan hemihydrate, 98%, 98% ee
Esculin hydrate, 97% from Thermo Fisher Scientific
Ethyl 2-hydroxyethyl sulfide, 98% from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific