Supplier Page from Thermo Fisher Scientific for 5-Amino-2-(hydroxymethyl)benzeneboronic acid hemiester hydrochloride, 95%
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
4-Ethylaniline, 99+% from Thermo Fisher Scientific
Ethyl 3-hydroxybutyrate, 99% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific