Supplier Page from Thermo Fisher Scientific for Triphenylphosphine dibromide, ca. 33% bromine
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific