For Liquid Chromatography and Molecular Biology Buffers Formula: C₈H₁₈N₂O₄S Formula Weight: 238.31 CAS Number: 7365-45-9 Synonym(s): (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid)

Formula: C₆H₉N₃O₂ Formula Weight: 155.16 CAS Number: 71-00-1 Synonym(s): (alpha) - Amino-4-imidazole Propionic Acid; Glyoxaline-5-alanine