Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2937.50.00.00Tariff 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
Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues
2937.50.00.00
Rates of duty
General rate (Column 1)Free
Special—
Column 225%
Unitg
Printed page 1573
Measure flags
for origin CN, entry date 2026-10-25 · base rate Free
- Section 301 forced-labor tariff (12.5%)9903.05.86ExemptexemptOn the note 52(b) general exemption list (exempt by HTS line; enter under 9903.05.86)
- China 301: not on any listN/A—8-digit subheading 2937.50.00 is not on Lists 1–4B or the four-year-review lists
- 232 patented pharmaceuticals9903.04.60Conditionalcapped at 100%General (all other countries) | Pharmaceutical articles (chapter 29): patented finished drugs / APIs / key starting materials; patented or generic status is determined by the article, not by t
- PGAFDA FD2 · requiredAPHIS Core AQ1
Confirmed total 0% · max 100%Full duty breakdown →