Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2937.90.90.00Tariff line
Classification path
Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones
2937
Other
Other
2937.90.90.00
Rates of duty
- General rate (Column 1)
- Free
- Special
- —
- Column 2
- 25%
- Unit
- g
- Printed page
- 1574
Measure flagsfor origin CN
- Section 301 forced labor: on an exemption list9903.05.86 · note 52(b)
- Section 232 (PHARMA)9903.04.60 · 100% · 药品物品（第29章）：专利药成品 / API / 关键起始物料，按物品而非编码判定专利/仿制 · from 2026-07-31
- Partner government agency (PGA) requirementsFDA FD3, APHIS_Core AQ1