# United States tariff lines under HS 2922.44

> The United States tariff splits HS 2922.44 (amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof: Tilidine (INN) and its salts) into 1 national line: 2922.44.00.00 (tilidine (INN) and its salts). Every United States line under 2922.44 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/292244
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) / [2922.44](https://border.bot/countries/united-states/hs-codes/292244)

## Key facts

- HS subheading: [2922.44](https://border.bot/hs-codes/292244)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2922.44

The United States tariff splits HS 2922.44 (amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof: Tilidine (INN) and its salts) into 1 national line: 2922.44.00.00 (tilidine (INN) and its salts).

Every United States line under 2922.44 is free of general (MFN) duty.

- [2922.44.00.00](https://border.bot/countries/united-states/hs-codes/2922440000) Amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof, Tilidine (INN) and its salts. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2922.44 yet.

- [The Harmonized System text for 2922.44](https://border.bot/hs-codes/292244)

- Previous subheading: [2922.43](https://border.bot/countries/united-states/hs-codes/292243) Anthranilic acid and its salts
- Next subheading: [2922.49](https://border.bot/countries/united-states/hs-codes/292249) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2922.44?

The United States tariff splits HS 2922.44 (amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof: Tilidine (INN) and its salts) into 1 national line: 2922.44.00.00 (tilidine (INN) and its salts).

### What is the duty on HS 2922.44 in the United States?

Every United States line under 2922.44 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/292244.json