Supplier Page from Thermo Fisher Scientific for Cellulose acetate, average M.W. 100,000
L(+)-Glutamic acid monosodium salt monohydrate, 99% from Thermo Fisher Scientific
L-Alanine, 99% from Thermo Fisher Scientific
Propionaldehyde, 99+% from Thermo Fisher Scientific
Semicarbazide hydrochloride, 99+% from Thermo Fisher Scientific