Supplier Page from Thermo Fisher Scientific for 2,2'-Bis(trifluoromethyl)benzidine, 97%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Esculin hydrate, 97% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific