Synonyms: L-(+)-Lysine, Hydrate, (S)-(+)-2,6-Diaminohexanoic acid monohydrate, (S)-(+)-Lysine monohydrate, L-Lysine hydrate, (S)-(+)-2,6-Diaminocaproic acid monohydrate, H-Lys-OH monohydrate, K monohydrate, H-Lys-OH·H₂O, Lys monohydrate