Supplier Page from Thermo Fisher Scientific for Carboxymethyl cellulose, sodium salt, average M.W. 250000 (DS=0.9)
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific