The physiological steps of thyroid hormones are created predominantly by T3, the majority of which (close to 80%) is derived from T4 by deiodination in peripheral tissues. Synthetic T4 is equivalent in chemical framework on the T4 developed in the human thyroid gland. Levothyroxine sodium has the molecular formulation C15H10I4NNaO4 https://michaely776aej3.iamthewiki.com/user