# United States tariff lines under HS 2933.59

> The United States tariff splits HS 2933.59 (compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other) into 13 national lines: 2933.59.10.00 (herbicides), 2933.59.15.00 (other), 2933.59.18.00 (other), 2933.59.21.00 (antihistamines, including those principally used as anti-nauseants) and 9 others.

Source: https://border.bot/countries/united-states/hs-codes/293359
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) / [2933.59](https://border.bot/countries/united-states/hs-codes/293359)

## Key facts

- HS subheading: [2933.59](https://border.bot/hs-codes/293359)
- National lines: 13
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2933.59

The United States tariff splits HS 2933.59 (compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other) into 13 national lines: 2933.59.10.00 (herbicides), 2933.59.15.00 (other), 2933.59.18.00 (other), 2933.59.21.00 (antihistamines, including those principally used as anti-nauseants) and 9 others.

- [2933.59.10.00](https://border.bot/countries/united-states/hs-codes/2933591000) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Pesticides, Aromatic or modified aromatic, Herbicides. Duty (MFN): 6.5%
- [2933.59.15.00](https://border.bot/countries/united-states/hs-codes/2933591500) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Pesticides, Aromatic or modified aromatic, Other. Duty (MFN): 6.5%
- [2933.59.18.00](https://border.bot/countries/united-states/hs-codes/2933591800) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Pesticides, Other. Duty (MFN): 6.5%
- [2933.59.21.00](https://border.bot/countries/united-states/hs-codes/2933592100) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Aromatic or modified aromatic, Antihistamines, including those principally used as anti-nauseants. Duty (MFN): 6.5%
- [2933.59.22.00](https://border.bot/countries/united-states/hs-codes/2933592200) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Aromatic or modified aromatic, Anti-infective agents, Nicarbazin; and Trimethoprim. Duty (MFN): 6.5%
- [2933.59.36.00](https://border.bot/countries/united-states/hs-codes/2933593600) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Aromatic or modified aromatic, Anti-infective agents, Other. Duty (MFN): 6.5%
- [2933.59.46.00](https://border.bot/countries/united-states/hs-codes/2933594600) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Aromatic or modified aromatic, Antidepressants, tranquilizers and other psychotherapeutic agents. Duty (MFN): 6.5%
- [2933.59.53.00](https://border.bot/countries/united-states/hs-codes/2933595300) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Aromatic or modified aromatic, Other. Duty (MFN): 6.5%
- [2933.59.59.00](https://border.bot/countries/united-states/hs-codes/2933595900) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Drugs, Other. Duty (MFN): 3.7%
- [2933.59.70.00](https://border.bot/countries/united-states/hs-codes/2933597000) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Other, Aromatic or modified aromatic, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2933.59.80.00](https://border.bot/countries/united-states/hs-codes/2933598000) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Other, Aromatic or modified aromatic, Other. Duty (MFN): 6.5%
- [2933.59.85.00](https://border.bot/countries/united-states/hs-codes/2933598500) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Other, Other, 2-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil. Duty (MFN): free
- [2933.59.95.00](https://border.bot/countries/united-states/hs-codes/2933599500) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, Other, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2933.59 yet.

- [The Harmonized System text for 2933.59](https://border.bot/hs-codes/293359)

- Previous subheading: [2933.55](https://border.bot/countries/united-states/hs-codes/293355) Heterocyclic compounds with nitrogen hetero-atom(s) only
- Next subheading: [2933.61](https://border.bot/countries/united-states/hs-codes/293361) Heterocyclic compounds with nitrogen hetero-atom(s) only

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2933.59?

The United States tariff splits HS 2933.59 (compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other) into 13 national lines: 2933.59.10.00 (herbicides), 2933.59.15.00 (other), 2933.59.18.00 (other), 2933.59.21.00 (antihistamines, including those principally used as anti-nauseants) and 9 others.

## 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/293359.json