What is HS code 2937.23?

HS code 2937.23 covers: Estrogens and progestins. It belongs to chapter 29 (Organic chemicals) of the Harmonized System.

What is the US import duty for HS code 2937.23?

The US general (normal trade relations) rates under this subheading range: Free. Preference programs and Section 232/301 surcharges can change the effective rate; see the HTS lines for detail.

What is the UK commodity code for 2937.23?

The UK extends 2937.23 to 1 declarable 10-digit commodity code, starting with 2937230000. The full code goes on the UK customs declaration.

Chapter 29 · Organic chemicals · Section 6

HS Code 2937.23

Estrogens and progestins

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

US duty (general)

Free

US HTS lines

EU CN codes

UK commodity codes

Unit

US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources

United States - HTS lines under 2937.23

Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.

HTS code	Description	General	Special	Other	Unit
2937.23.10	Estrogens and progestins > Obtained directly or indirectly from animal or vegetable materials 3 statistical lines (10-digit) 2937.23.10.10 - Estrogens 2937.23.10.20 - Progesterone 2937.23.10.50 - Other	Free	-	25%	g
2937.23.25	Estrogens and progestins > Other > Estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate)	Free	-	15.4¢/kg + 49%	g
2937.23.50	Estrogens and progestins > Other > Other 3 statistical lines (10-digit) 2937.23.50.10 - Estrogens 2937.23.50.20 - Progesterone 2937.23.50.50 - Other	Free	-	15.4¢/kg + 78.5%	g

Estimate the US duty runs in your browser · no caps

Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.

Customs value (USD) Quantity (g)

European Union - CN codes under 2937.23

Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.

CN code	Description
2937 23 00	Oestrogens and progestogens	EU duty (TARIC) →

United Kingdom - commodity codes under 2937.23

Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.

Commodity code	Description
2937 23 00 00	Oestrogens and progestogens	UK duty & VAT →

Not a customs ruling. Classification is determined by the importing country's customs authority and depends on the exact product. This page is reference information from official published schedules, not legal advice. For a binding decision, request a ruling (US: CBP CROSS · UK: HMRC ATaR · EU: BTI).

Other subheadings in 2937

2937.00 2937 Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by syn 2937.11 Somatotropin, its derivatives and structural analogues 2937.12 Insulin and its salts 2937.19 Other 2937.21 Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydroco 2937.22 Halogenated derivatives of adrenal cortical hormones 2937.23 Estrogens and progestins 2937.29 Other 2937.50 Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues 2937.90 Other

Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.