| 2937 |  | 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 | 00 | Polypeptide hormones, protein hormones and glycoprotein hormones, their derivatives and structural analogues: |  |  |  |  | 
| 2937.11.00 | 00 | Somatotropin, its derivatives and structural analogues | g | Free |  | 10% | 
| 2937.19.00 | 00 | Other | g | Free |  | 25% | 
| 2937.21.00 |  | Steroidal hormones, their derivatives and structural analogues: |  |  |  |  | 
| 2937.21.00 |  | Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone) |  | Free |  | 25% | 
| 2937.21.00 | 10 | Cortisone | g |  |  |  | 
| 2937.21.00 | 20 | Hydrocortisone | g |  |  |  | 
| 2937.21.00 | 30 | Prednisone | g |  |  |  | 
| 2937.21.00 | 40 | Prednisolone | g |  |  |  | 
| 2937.22.00 | 00 | Halogenated derivatives of adrenal cortical hormones | g | Free |  | 25% | 
| 2937.23 |  | Estrogens and progestins: |  |  |  |  | 
| 2937.23.10 |  | Obtained directly or indirectly from animal or vegetable materials |  | Free |  | 25% | 
| 2937.23.10 | 10 | Estrogens | g |  |  |  | 
| 2937.23.10 | 20 | Other: |  |  |  |  | 
| 2937.23.10 | 20 | Progesterone | kg |  |  |  | 
| 2937.23.10 | 50 | Other | kg |  |  |  | 
| 2937.23.25 | 00 | Other: |  |  |  |  | 
| 2937.23.25 | 00 | Estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate) | g | Free |  | 15.4¢/kg +  49% | 
| 2937.23.50 |  | Other |  | Free |  | 15.4¢/kg +  78.5% | 
| 2937.23.50 | 10 | Estrogens | g |  |  |  | 
| 2937.23.50 | 20 | Other: |  |  |  |  | 
| 2937.23.50 | 20 | Progesterone | g |  |  |  | 
| 2937.23.50 | 50 | Other | g |  |  |  | 
| 2937.29 |  | Other: |  |  |  |  |