Supplier Page from Thermo Fisher Scientific for Ethyl 1-(trifluoromethyl)cyclobutanecarboxylate, 97%
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific