1-Butyl-3-methylimidazolium acetate, 39952 (Aldrich)

Acid Red 73, Sigma-Aldrich 49823

Ammonium formate, AC401150000; AC401150010;AC401150050; AC401152500

Clear V4.1 Resin, FLGPCL41

Congo Red, High Purity, Millipore 234610

Cyrene, 99%, 807796 (Sigma-Aldrich)

Durable Resin, FLDUCL02

Hexadecyltrimethylammonium bromide

L-Arginine, A5006 (Sigma-Aldrich)

L-Leucine, W329703 (Aldrich)

L-Valine, V0500 (Sigma-Aldrich)

Oxalic acid, anhydrous, 44410

Poly(4-vinylpyridine), Aldrich 472344

Sodium nitrate, Sigma 71755

Sodium sulfate, 239313 (SIGALD)

Tannic acid, Sigma-Aldrich 403040

Tantalum, 262846 (Aldrich)

Tetrahydrofuran, stabilized with BHT, AC176630000, AC176630010; AC176630025; AC176630050; AC176630100; AC176630250

Titanium powder, 223200