Supplier Page from Thermo Fisher Scientific for Potassium hydrogen sulfate, fused, ACS, mixture of potassium pyrosulfate, K{2}S{2}O{7}, and potassium bisulfate, KHSO{4}
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific