英文别名β-hydroxy-Thyroxine; Thyroxine Impurity 1; (2S)-2-amino-3-hydroxy-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid; beta-Hydroxy thyroxine; Thyroxine, beta-hydroxy-; O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-beta-hydroxy-L-tyrosine; β-HYDROXY THYROXINE; O-(4-HYDROXY-3,5-DIIODOPHENYL)-3,5-DIIODO-β-HYDROXY-L-TYROSINE; Levothyroxine sodium impurity,beta-hydroxy-t4-(USP); beta-HYDROXY-T4-; beta -Hydroxy-t4-; beta-Hydroxy-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine; Levothyroxine beta-Hydroxy Impurity; β-[3,5-Diiodo-4-(3,5-diiodo-4-hydroxyphenoxy)phenyl]serine; Levothyroxine Impurity 21; Levothyroxine Impurity 2 
