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Levothyroxine Sodium
C15H10I4NNaO4·xH2O (anhydrous) 798.85
l-Tyrosine, O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-, monosodium salt, hydrate;
Monosodium l-thyroxine hydrate
[25416-65-3] Anhydrous [55-03-8]

DEFINITION

Levothyroxine Sodium is the sodium salt of l-3,3′,5,5′-tetraiodothyronine. It contains NLT 97.0% and NMT 103.0% of levothyroxine sodium (C15H10I4NNaO4), calculated on the anhydrous basis.

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