Sacubitril Sodium Standard

Sodium 4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate; Sacubitril Sodium Salt; Sodium, (2R,4S)-4-[(3-Carboxy-1-oxopropyl)amino]-4-[(p-phenylphenyl)methyl]-2-methylbutanoic Acid Ethyl Ester; [1,1′-Biphenyl]-4-pentanoic acid, γ-[(3-carboxy-1-oxopropyl)amino]-α-methyl-, α-ethyl ester, monosodium salt, [S-(R*,S*)];