Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2937.90.45.00Tariff 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
Amino-acid derivatives
Other
2937.90.45.00
Rates of duty
General rate (Column 1)Free
Special—
Column 225%
Unitg
Printed page 1574
Measure flags
for origin CN, entry date 2026-10-26 · 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 2937.90.45 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 →