Supplier Page from Thermo Fisher Scientific for (R)-3-(Boc-amino)-3-(4-bromophenyl)propionic acid, 95%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl butyrylacetate, 98% from Thermo Fisher Scientific
Ethyl chloroacetate, 99% from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific