Supplier Page from Thermo Fisher Scientific for 2,3-Dimethylquinoxaline, 97%
Ethyl chloroformate, 99% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethylenediamine, 99% from Thermo Fisher Scientific
Fluorescein isothiocyanate isomer I, 90%, pure from Thermo Fisher Scientific