Supplier Page from Thermo Fisher Scientific for Direct Red 80
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
Benzalkonium chloride, alkyl distribution C8-C16, 50 wt% aqueous solution from Thermo Fisher Scientific
Ethylene carbonate, 99+% from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific