Supplier Page from Thermo Fisher Scientific for 2,2,2-Trimethoxy-4,5-dimethyl-1,3,2-dioxaphospholene, 97%
4-Fluoroaniline, 98% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific