thyroxine, t4 or levothyroxine thyroid hormone molecule. prohormone of thyronine t3. skeletal formula.

thyroxine molecule formula chemical t4 atom atomic atoms binding carbon chemistry composition compound deficiency deiodinase disease drawing drug flat gland globulin goitre graves hormone hydrogen hyperthyroidism hypothyroidism icon illustration iodine line medical medicine metabolism molecular nitrogen oxygen prohormone science skeletal stimulating structure t3 tbg thyroid thyronine thyroxin tsh vector