Supplier Page from Thermo Fisher Scientific for 2,3,5,6-Tetramethylbenzenesulfonyl chloride, 98%
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific