Supplier Page from Thermo Fisher Scientific for 4-(Boc-amino)tetrahydropyran-4-carboxylic acid, 95%
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific