# United States tariff lines under HS 2937.23

> The United States tariff splits HS 2937.23 (steroidal hormones, their derivatives and structural analogues: Oestrogens and progestogens) into 7 national lines: 2937.23.10.10 (estrogens), 2937.23.10.20 (progesterone), 2937.23.10.50 (other), 2937.23.25.00 (estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate)) and 3 others. Every United States line under 2937.23 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/293723
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2937.23](https://border.bot/countries/united-states/hs-codes/293723)

## Key facts

- HS subheading: [2937.23](https://border.bot/hs-codes/293723)
- Duty (MFN): Free
- National lines: 7
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2937.23

The United States tariff splits HS 2937.23 (steroidal hormones, their derivatives and structural analogues: Oestrogens and progestogens) into 7 national lines: 2937.23.10.10 (estrogens), 2937.23.10.20 (progesterone), 2937.23.10.50 (other), 2937.23.25.00 (estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate)) and 3 others.

Every United States line under 2937.23 is free of general (MFN) duty.

- [2937.23.10.10](https://border.bot/countries/united-states/hs-codes/2937231010) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Obtained directly or indirectly from animal or vegetable materials, Estrogens. Duty (MFN): free
- [2937.23.10.20](https://border.bot/countries/united-states/hs-codes/2937231020) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Obtained directly or indirectly from animal or vegetable materials, Other, Progesterone. Duty (MFN): free
- [2937.23.10.50](https://border.bot/countries/united-states/hs-codes/2937231050) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Obtained directly or indirectly from animal or vegetable materials, Other, Other. Duty (MFN): free
- [2937.23.25.00](https://border.bot/countries/united-states/hs-codes/2937232500) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Other, Estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate). Duty (MFN): free
- [2937.23.50.10](https://border.bot/countries/united-states/hs-codes/2937235010) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Other, Other, Estrogens. Duty (MFN): free
- [2937.23.50.20](https://border.bot/countries/united-states/hs-codes/2937235020) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Other, Other, Other, Progesterone. Duty (MFN): free
- [2937.23.50.50](https://border.bot/countries/united-states/hs-codes/2937235050) Steroidal hormones, their derivatives and structural analogues, Estrogens and progestins, Other, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2937.23 yet.

- [The Harmonized System text for 2937.23](https://border.bot/hs-codes/293723)

- Previous subheading: [2937.22](https://border.bot/countries/united-states/hs-codes/293722) Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones
- Next subheading: [2937.29](https://border.bot/countries/united-states/hs-codes/293729) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2937.23?

The United States tariff splits HS 2937.23 (steroidal hormones, their derivatives and structural analogues: Oestrogens and progestogens) into 7 national lines: 2937.23.10.10 (estrogens), 2937.23.10.20 (progesterone), 2937.23.10.50 (other), 2937.23.25.00 (estradiol benzoate; and Estradiol cyclopentylpropionate (Estradiol cypionate)) and 3 others.

### What is the duty on HS 2937.23 in the United States?

Every United States line under 2937.23 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/293723.json