# United States tariff lines under HS 2933.39

> The United States tariff splits HS 2933.39 (compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Other) into 15 national lines: 2933.39.08.00 (1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride), 2933.39.10.00 (collidines, lutidines and picolines), 2933.39.20.00 (p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid), 2933.39.21.00 (fungicides) and 11 others.

Source: https://border.bot/countries/united-states/hs-codes/293339
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) / [2933.39](https://border.bot/countries/united-states/hs-codes/293339)

## Key facts

- HS subheading: [2933.39](https://border.bot/hs-codes/293339)
- National lines: 15
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2933.39

The United States tariff splits HS 2933.39 (compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Other) into 15 national lines: 2933.39.08.00 (1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride), 2933.39.10.00 (collidines, lutidines and picolines), 2933.39.20.00 (p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid), 2933.39.21.00 (fungicides) and 11 others.

- [2933.39.08.00](https://border.bot/countries/united-states/hs-codes/2933390800) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, 1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride. Duty (MFN): free
- [2933.39.10.00](https://border.bot/countries/united-states/hs-codes/2933391000) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Collidines, lutidines and picolines. Duty (MFN): free
- [2933.39.20.00](https://border.bot/countries/united-states/hs-codes/2933392000) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid. Duty (MFN): 5.8%
- [2933.39.21.00](https://border.bot/countries/united-states/hs-codes/2933392100) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Pesticides, Fungicides. Duty (MFN): 6.5%
- [2933.39.23.00](https://border.bot/countries/united-states/hs-codes/2933392300) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Pesticides, Herbicides, o-Paraquat dichloride. Duty (MFN): 6.5%
- [2933.39.25.00](https://border.bot/countries/united-states/hs-codes/2933392500) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Pesticides, Herbicides, Other. Duty (MFN): 6.5%
- [2933.39.27.00](https://border.bot/countries/united-states/hs-codes/2933392700) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Pesticides, Other. Duty (MFN): 6.5%
- [2933.39.31.00](https://border.bot/countries/united-states/hs-codes/2933393100) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Drugs, Antidepressants, tranquilizers and other psychotherapeutic agents. Duty (MFN): 6.5%
- [2933.39.41.00](https://border.bot/countries/united-states/hs-codes/2933394100) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Drugs, Other. Duty (MFN): 6.5%
- [2933.39.61.10](https://border.bot/countries/united-states/hs-codes/2933396110) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Other, Products described in additional U.S. note 3 to section VI, 3-Quinuclidinyl benzilate. Duty (MFN): 6.5%
- [2933.39.61.20](https://border.bot/countries/united-states/hs-codes/2933396120) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Other, Products described in additional U.S. note 3 to section VI, 1-[N,N-Dialkyl (≤C10)-N-(n-(hydroxyl, cyano, acetoxy)alkyl (≤C10)) ammonio]-n-n-[N-(3- dimethylcarbamoxy-α-picolinyl)-N,N-dialkyl (≤C10) ammonio]decane dibromide (n=1-8). Duty (MFN): 6.5%
- [2933.39.61.30](https://border.bot/countries/united-states/hs-codes/2933396130) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Other, Products described in additional U.S. note 3 to section VI, 1,n-Bis[N-(3-dimethylcarbamoxy-α-picolyl)- N,N-dialkyl (≤ C10) ammonio]-alkane-(2,(n-1)- dione) dibromide (n=2-12). Duty (MFN): 6.5%
- [2933.39.61.40](https://border.bot/countries/united-states/hs-codes/2933396140) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Other, Products described in additional U.S. note 3 to section VI, Other, N-phenyl-4-piperidinamine (4-AP), tert-butyl 4-(phenylamino)piperidine-1-carboxylate (tert-butyl 4-anilinopiperidine-1-carboxylate, 1-boc-4-AP), norfentanyl (N-phenyl-N-(4-piperidyl)propionamide), piperidin-4-one (4-piperidone) and tert-butyl 4-oxopiperidine-1-carboxylate (1-boc-4-piperidone); salts thereof. Duty (MFN): 6.5%
- [2933.39.61.92](https://border.bot/countries/united-states/hs-codes/2933396192) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, Other, Other, Other, Products described in additional U.S. note 3 to section VI, Other, Other. Duty (MFN): 6.5%
- [2933.39.92.00](https://border.bot/countries/united-states/hs-codes/2933399200) Compounds containing an unfused pyridine ring (whether or not hydrogenated) 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 2933.39 yet.

- [The Harmonized System text for 2933.39](https://border.bot/hs-codes/293339)

- Previous subheading: [2933.37](https://border.bot/countries/united-states/hs-codes/293337) Heterocyclic compounds with nitrogen hetero-atom(s) only
- Next subheading: [2933.41](https://border.bot/countries/united-states/hs-codes/293341) Heterocyclic compounds with nitrogen hetero-atom(s) only

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2933.39?

The United States tariff splits HS 2933.39 (compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Other) into 15 national lines: 2933.39.08.00 (1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride), 2933.39.10.00 (collidines, lutidines and picolines), 2933.39.20.00 (p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid), 2933.39.21.00 (fungicides) and 11 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/293339.json