Supplier Page from Thermo Fisher Scientific for 4-Methylaminophenol sulfate, ACS reagent, 99.0-101.5%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Ethylresorcinol, 98% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific