Supplier Page from Thermo Fisher Scientific for Pyridinium bromide perbromide, 90+%, technical
L(+)-Histidine methyl ester dihydrochloride, 97% from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific
L-Leucine methyl ester hydrochloride, 98% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific