# United States tariff line 2933.41.00.00: Levorphanol (INN) and its salts

> In the United States tariff, line 2933.41.00.00 covers compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, levorphanol (INN) and its salts. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2933.41 in heading 29.33 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2933410000
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) / [2933.41](https://border.bot/countries/united-states/hs-codes/293341) / [2933.41.00.00](https://border.bot/countries/united-states/hs-codes/2933410000)

## Key facts

- Tariff line: 2933.41.00.00
- Covers: Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, levorphanol (INN) and its salts
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2933.41](https://border.bot/hs-codes/293341)

## What this line covers

In the United States tariff, line 2933.41.00.00 covers compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, levorphanol (INN) and its salts.

Its legal text is “Levorphanol (INN) and its salts”, read under “Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused”.

## How it is structured

It falls under HS subheading 2933.41 in heading 29.33 (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 29.33: Heterocyclic compounds with nitrogen hetero-atom(s) only
- Subheading 2933.41: Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused
- Line 2933.41.00.00: Levorphanol (INN) and its salts

## 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 2933.41 yet.

- [The Harmonized System text for 2933.41](https://border.bot/hs-codes/293341)

- Previous line: [2933.39.92.00](https://border.bot/countries/united-states/hs-codes/2933399200) Other
- Next line: [2933.49.08.00](https://border.bot/countries/united-states/hs-codes/2933490800) 4,7-Dichloroquinoline

## Frequently asked questions

### What does tariff line 2933.41.00.00 cover in the United States tariff?

In the United States tariff, line 2933.41.00.00 covers compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, levorphanol (INN) and its salts.

### What is the general (MFN) duty on 2933.41.00.00 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/2933410000.json