Supplier Page from Thermo Fisher Scientific for 1,4-Bis(diphenylphosphino)butane, 98%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl oxalyl chloride, 98% from Thermo Fisher Scientific
Ethyl pyruvate, 98% from Thermo Fisher Scientific
Eugenol, 99% from Thermo Fisher Scientific