Supplier Page from Thermo Fisher Scientific for 3,3'-Diaminodiphenyl sulfone, 98%
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific