Supplier Page from Thermo Fisher Scientific for Toluidine Blue O, Certified, 65% min dye content
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethylene glycol dimethyl ether, 99+%, extra pure, stabilized with BHT from Thermo Fisher Scientific