# United States tariff lines under HS 2933.72

> The United States tariff splits HS 2933.72 (lactams: Clobazam (INN) and methyprylon (INN)) into 1 national line: 2933.72.00.00 (clobazam (INN) and methyprylon (INN)). Every United States line under 2933.72 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/293372
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) / [2933.72](https://border.bot/countries/united-states/hs-codes/293372)

## Key facts

- HS subheading: [2933.72](https://border.bot/hs-codes/293372)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2933.72

The United States tariff splits HS 2933.72 (lactams: Clobazam (INN) and methyprylon (INN)) into 1 national line: 2933.72.00.00 (clobazam (INN) and methyprylon (INN)).

Every United States line under 2933.72 is free of general (MFN) duty.

- [2933.72.00.00](https://border.bot/countries/united-states/hs-codes/2933720000) Lactams, Clobazam (INN) and methyprylon (INN). Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2933.72 yet.

- [The Harmonized System text for 2933.72](https://border.bot/hs-codes/293372)

- Previous subheading: [2933.71](https://border.bot/countries/united-states/hs-codes/293371) Heterocyclic compounds with nitrogen hetero-atom(s) only
- Next subheading: [2933.79](https://border.bot/countries/united-states/hs-codes/293379) Other lactams

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2933.72?

The United States tariff splits HS 2933.72 (lactams: Clobazam (INN) and methyprylon (INN)) into 1 national line: 2933.72.00.00 (clobazam (INN) and methyprylon (INN)).

### What is the duty on HS 2933.72 in the United States?

Every United States line under 2933.72 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/293372.json