Supplier Page from Thermo Fisher Scientific for 4-Methyl-3-nitrobenzenesulfonyl chloride, 95%
2-Ethylaniline, 98% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl oxamate, 99% from Thermo Fisher Scientific