Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2937.19.00.00Tariff 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
Polypeptide hormones, protein hormones and glycoprotein hormones, their derivatives and structural analogues
Other
2937.19.00.00
Rates of duty
- General rate (Column 1)
- Free
- Special
- —
- Column 2
- 25%
- Unit
- g
- Printed page
- 1572
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 FD1, APHIS_Core AQ1