Supplier Page from Thermo Fisher Scientific for Poly(acrylic acid), 25 wt% soln. in water
2-Mercaptobenzothiazole, 95% from Thermo Fisher Scientific
Imidazole, 99% from Thermo Fisher Scientific
L(+)-Lysine monohydrochloride, 99% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific