# United States tariff line 2937.90.45.00: Other

> In the United States tariff, line 2937.90.45.00 covers amino-acid derivatives. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2937.90 in heading 29.37 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2937904500
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) / [2937.90](https://border.bot/countries/united-states/hs-codes/293790) / [2937.90.45.00](https://border.bot/countries/united-states/hs-codes/2937904500)

## Key facts

- Tariff line: 2937.90.45.00
- Covers: Amino-acid derivatives
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2937.90](https://border.bot/hs-codes/293790)

## What this line covers

In the United States tariff, line 2937.90.45.00 covers amino-acid derivatives.

Its legal text is “Other”, read under “Other” and “Amino-acid derivatives”.

## How it is structured

It falls under HS subheading 2937.90 in heading 29.37 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 29: Organic chemicals
- Heading 29.37: Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones
- Subheading 2937.90: Other
- Within the subheading: Amino-acid derivatives
- Line 2937.90.45.00: Other

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 2937.90 yet.

- [The Harmonized System text for 2937.90](https://border.bot/hs-codes/293790)

## Other lines under 2937.90

- [2937.90.05.00](https://border.bot/countries/united-states/hs-codes/2937900500) Epinephrine
- [2937.90.10.00](https://border.bot/countries/united-states/hs-codes/2937901000) Epinephrine hydrochloride
- [2937.90.20.00](https://border.bot/countries/united-states/hs-codes/2937902000) Other
- [2937.90.40.00](https://border.bot/countries/united-states/hs-codes/2937904000) l-Thyroxine (Levothyroxine), sodium
- [2937.90.90.00](https://border.bot/countries/united-states/hs-codes/2937909000) Other

- Previous line: [2937.90.40.00](https://border.bot/countries/united-states/hs-codes/2937904000) l-Thyroxine (Levothyroxine), sodium
- Next line: [2937.90.90.00](https://border.bot/countries/united-states/hs-codes/2937909000) Other

## Frequently asked questions

### What does tariff line 2937.90.45.00 cover in the United States tariff?

In the United States tariff, line 2937.90.45.00 covers amino-acid derivatives.

### What is the general (MFN) duty on 2937.90.45.00 in the United States?

Goods under this line enter 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/2937904500.json