Supplier Page from Thermo Fisher Scientific for 2-Cyclopentene-1-acetic acid, tech. 90%, remainder mainly 3-cyclopentene-1-acetic acid
Ethylenediamine, 99% from Thermo Fisher Scientific
Furfuryl mercaptan, 97% from Thermo Fisher Scientific
Glutaric acid, 99% from Thermo Fisher Scientific
Glutaric anhydride, 95% from Thermo Fisher Scientific