Supplier Page from Thermo Fisher Scientific for Methyl 4,5-dibromo-3-hydroxythiophene-2-carboxylate, 97%
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl 3-chloropropionate, 98% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific