# United States tariff line 2934.30.18.00: Ethyl (1H-phenothiazin-2,4,1)carbamate

> In the United States tariff, line 2934.30.18.00 covers compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused, ethyl (1H-phenothiazin-2,4,1)carbamate. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2934.30 in heading 29.34 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2934301800
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) / [2934.30](https://border.bot/countries/united-states/hs-codes/293430) / [2934.30.18.00](https://border.bot/countries/united-states/hs-codes/2934301800)

## Key facts

- Tariff line: 2934.30.18.00
- Covers: Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused, ethyl (1H-phenothiazin-2,4,1)carbamate
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2934.30](https://border.bot/hs-codes/293430)

## What this line covers

In the United States tariff, line 2934.30.18.00 covers compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused, ethyl (1H-phenothiazin-2,4,1)carbamate.

Its legal text is “Ethyl (1H-phenothiazin-2,4,1)carbamate”, read under “Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused”.

## How it is structured

It falls under HS subheading 2934.30 in heading 29.34 (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 29.34: Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
- Subheading 2934.30: Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused
- Line 2934.30.18.00: Ethyl (1H-phenothiazin-2,4,1)carbamate

## 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 2934.30 yet.

- [The Harmonized System text for 2934.30](https://border.bot/hs-codes/293430)

## Other lines under 2934.30

- [2934.30.12.00](https://border.bot/countries/united-states/hs-codes/2934301200) 2-(Trifluoromethyl)phenothiazine
- [2934.30.23.00](https://border.bot/countries/united-states/hs-codes/2934302300) Antidepressants, tranquilizers and other psychotherapeutic agents
- [2934.30.27.00](https://border.bot/countries/united-states/hs-codes/2934302700) Other
- [2934.30.43.00](https://border.bot/countries/united-states/hs-codes/2934304300) Products described in additional U.S. note 3 to section VI
- [2934.30.50.00](https://border.bot/countries/united-states/hs-codes/2934305000) Other

- Previous line: [2934.30.12.00](https://border.bot/countries/united-states/hs-codes/2934301200) 2-(Trifluoromethyl)phenothiazine
- Next line: [2934.30.23.00](https://border.bot/countries/united-states/hs-codes/2934302300) Antidepressants, tranquilizers and other psychotherapeutic agents

## Frequently asked questions

### What does tariff line 2934.30.18.00 cover in the United States tariff?

In the United States tariff, line 2934.30.18.00 covers compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused, ethyl (1H-phenothiazin-2,4,1)carbamate.

### What is the general (MFN) duty on 2934.30.18.00 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/2934301800.json