Supplier Page from Thermo Fisher Scientific for 1,3-Propanedithiol, 97%
2,6-Lutidine, 99% from Thermo Fisher Scientific
L(+)-Glutamic acid monosodium salt monohydrate, 99% from Thermo Fisher Scientific
Maleic acid, 99% from Thermo Fisher Scientific
Semicarbazide hydrochloride, 99+% from Thermo Fisher Scientific