Supplier Page from Thermo Fisher Scientific for 2-Amino-4-nitrobenzoic acid, 97+%
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
DL-Ethyl 2-bromopropionate, 99% from Thermo Fisher Scientific
Ethyl 3-aminobenzoate, methanesulfonic acid salt, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific