Supplier Page from Thermo Fisher Scientific for Betaine hydrochloride, 99%, extra pure, specified according to the requirements of USP
2-Ethyl-1-hexanol, 99% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific