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Certified Reference Standards...
Chemical Name: 2-Amino-3-hydroxy-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic acid
Synonym: Levothyroxine beta-Hydroxy T4 Impurity
Smiles: IC1=C(C(I)=CC(C(O)C(N)C(O)=O)=C1)OC2=CC(I)=C(O)C(I)=C2