Supplier Page from Thermo Fisher Scientific for (Trimethylsilyl)diazomethane, approx. 2M solution in diethyl ether
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific
Flavone, 99+% from Thermo Fisher Scientific