Supplier Page from Thermo Fisher Scientific for Direct Red 80
1,2-Bis(2-aminophenoxy)-ethane-N,N,N'N'-tetraacetic acid, 97% from Thermo Fisher Scientific
2-Mesitylenesulfonyl chloride, 99% from Thermo Fisher Scientific
4-Bromobutyric acid, 98% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific