Supplier Page from Thermo Fisher Scientific for (7-Azabenzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate, 98%
3-Ethoxy-2-cyclohexen-1-one, 99% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Ethyl trifluoroacetate, 99% from Thermo Fisher Scientific