Supplier Page from Thermo Fisher Scientific for Tetrafluoroboric acid-diethyl ether complex, 50-55% w/w HBF4
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl L(-)-lactate, 97% from Thermo Fisher Scientific
Ethyl N-piperazinecarboxylate, 99% from Thermo Fisher Scientific
Flavone, 99+% from Thermo Fisher Scientific