Supplier Page from Thermo Fisher Scientific for Thiophene, 99.5%, extra pure, benzene free
D(-)-Ribose, 99+% from Thermo Fisher Scientific
DL-1,2-Hexanediol, 98% from Thermo Fisher Scientific
Ethylene carbonate, 99+% from Thermo Fisher Scientific
L-Serine methyl ester hydrochloride, 98% from Thermo Fisher Scientific