2937-Hormones, prostaglandins, thromboxanes and leukotrienes, natural

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Harmonized Tariff Schedule (2025 HTS Revision 30 (11/21/2025))

HTS Code	2937
Article Description	Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones: Polypeptide hormones, protein hormones and glycoprotein hormones, their derivatives and structural analogues:
Quota of Quantity
Unit of Quantity	[]
Rates of Duty (1-General)
Rates of Duty (1-Special)
Rates of Duty (2-Cuba and North Korea)
Footnotes	[]
Additional Duty
Additional Duty(products of China)

Section VI:	Products of the Chemical or Allied Industries
Chapter 29	Organic chemicals
Heading 2937	Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones: Polypeptide hormones, protein hormones and glycoprotein hormones, their derivatives and structural analogues: