Supplier Page from Thermo Fisher Scientific for Titanium(III) sulfate, 20% in 1-4% sulfuric acid
3-Fluorobenzyl bromide, 95% from Thermo Fisher Scientific
Emodin, 95%, tech from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific