Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones:

2937.11.00.00Somatotropin, its derivatives and structural analogues 2937.12.00.00Insulin and its salts 2937.19.00.00Other 2937.21.00Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone) 2937.21.00.10Cortisone 2937.21.00.20Hydrocortisone 2937.21.00.30Prednisone 2937.21.00.40Prednisolone 2937.22.00.00Halogenated derivatives of adrenal cortical hormones 2937.23Estrogens and progestins: 2937.23.10Obtained directly or indirectly from animal or vegetable materials 2937.23.10.10Estrogens 2937.23.10.20Progesterone 2937.23.10.50Other 2937.23.25.00Estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate) 2937.23.50Other 2937.23.50.10Estrogens 2937.23.50.20Progesterone 2937.23.50.50Other 2937.29Other: 2937.29.10.00Desonide; andNandrolone phenproprionate 2937.29.90Other 2937.29.90.20Salts and esters of hydrocortisone 2937.29.90.30Salts and esters of prednisone 2937.29.90.40Salts and esters of prednisolone 2937.29.90.50Anabolic agents and androgens 2937.29.90.95Other 2937.50.00.00Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues 2937.90Other: 2937.90.05.00Epinephrine 2937.90.10.00Epinephrine hydrochloride 2937.90.20.00Other 2937.90.40.00l-Thyroxine (Levothyroxine), sodium 2937.90.45.00Other 2937.90.90.00Other