# United States tariff lines under HS 2941.10

> The United States tariff splits HS 2941.10 (penicillins and their derivatives with a penicillanic acid structure; salts thereof) into 4 national lines: 2941.10.10.00 (ampicillin and its salts), 2941.10.20.00 (penicillin G salts), 2941.10.30.00 (carfecillin, sodium; Cloxacillin, sodium; Dicloxacillin, sodium; Flucloxacillin (Floxacillin); and Oxacillin, sodium) and 2941.10.50.00 (other). Every United States line under 2941.10 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/294110
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) / [2941.10](https://border.bot/countries/united-states/hs-codes/294110)

## Key facts

- HS subheading: [2941.10](https://border.bot/hs-codes/294110)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2941.10

The United States tariff splits HS 2941.10 (penicillins and their derivatives with a penicillanic acid structure; salts thereof) into 4 national lines: 2941.10.10.00 (ampicillin and its salts), 2941.10.20.00 (penicillin G salts), 2941.10.30.00 (carfecillin, sodium; Cloxacillin, sodium; Dicloxacillin, sodium; Flucloxacillin (Floxacillin); and Oxacillin, sodium) and 2941.10.50.00 (other).

Every United States line under 2941.10 is free of general (MFN) duty.

- [2941.10.10.00](https://border.bot/countries/united-states/hs-codes/2941101000) Penicillins and their derivatives with a penicillanic acid structure; salts thereof, Ampicillin and its salts. Duty (MFN): free
- [2941.10.20.00](https://border.bot/countries/united-states/hs-codes/2941102000) Penicillins and their derivatives with a penicillanic acid structure; salts thereof, Penicillin G salts. Duty (MFN): free
- [2941.10.30.00](https://border.bot/countries/united-states/hs-codes/2941103000) Penicillins and their derivatives with a penicillanic acid structure; salts thereof, Other, Carfecillin, sodium; Cloxacillin, sodium; Dicloxacillin, sodium; Flucloxacillin (Floxacillin); and Oxacillin, sodium. Duty (MFN): free
- [2941.10.50.00](https://border.bot/countries/united-states/hs-codes/2941105000) Penicillins and their derivatives with a penicillanic acid structure; salts thereof, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2941.10 yet.

- [The Harmonized System text for 2941.10](https://border.bot/hs-codes/294110)

- Previous subheading: [2940.00](https://border.bot/countries/united-states/hs-codes/294000) Sugars, chemically pure, other than sucrose, lactose, maltose, glucose and fructose; sugar ethers, sugar acetals and sugar esters, and their salts, other than products of heading 2937, 2938 or 2939
- Next subheading: [2941.20](https://border.bot/countries/united-states/hs-codes/294120) Streptomycins and their derivatives; salts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2941.10?

The United States tariff splits HS 2941.10 (penicillins and their derivatives with a penicillanic acid structure; salts thereof) into 4 national lines: 2941.10.10.00 (ampicillin and its salts), 2941.10.20.00 (penicillin G salts), 2941.10.30.00 (carfecillin, sodium; Cloxacillin, sodium; Dicloxacillin, sodium; Flucloxacillin (Floxacillin); and Oxacillin, sodium) and 2941.10.50.00 (other).

### What is the duty on HS 2941.10 in the United States?

Every United States line under 2941.10 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/294110.json