(2R,3R)-2-ethyl-4-hydroxy-3-((1-methyl-1H-imidazol-5-yl)methyl)butanoic acid, sodium salt;[R-(R*,R*)]-?-Ethyl-?-(hydroxymethyl)-1-methyl-1H-imidazole-5-butanoic Acid Monosodium Salt; Isopilocarpinate Sodium Salt; Isopilocarpinic Acid Sodium Salt; (?R,?R)-?-Ethyl-?-(hydroxymethyl)-1-methyl-1H-imidazole-5-butanoic Acid Sodium Salt; 1,2-Seco-3-isopilocarpin-2-oic Acid Sodium Salt;Isopilocarpic Acid Sodium Salt