Supplier Page from Thermo Fisher Scientific for 3,5-Dichloro-µa-toluenesulfonyl chloride, 96%
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
4-Fluorobenzyl chloride, 98% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific