Supplier Page from Thermo Fisher Scientific for 5-Norbornene-2-carboxylic acid, 98%, mixture of isomers
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, methanesulfonic acid salt, 98% from Thermo Fisher Scientific
Ethyl picolinate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific