Supplier Page from Thermo Fisher Scientific for 5-Norbornene-2-carboxylic acid, 98%, mixture of isomers
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethyl indole-2-carboxylate, 97% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific