Supplier Page from Thermo Fisher Scientific for 2-(5-Bromo-2-pyridylazo)-5-(diethylamino)phenol, 98%
4-Fluoroaniline, 98% from Thermo Fisher Scientific
4-Fluoroanisole, 99% from Thermo Fisher Scientific
Dulcitol, 99+% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific