Supplier Page from Thermo Fisher Scientific for 2-(5-Bromo-2-pyridylazo)-5-(diethylamino)phenol, 98%
Ethyl 2-bromoisobutyrate, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific
Flavone, 99+% from Thermo Fisher Scientific