Supplier Page from Thermo Fisher Scientific for 5-(Chlorosulfonyl)salicylic acid, 97%
2-Ethoxybenzamide, 97% from Thermo Fisher Scientific
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific