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Code 2934 99 · Heading 2934

Other nucleic acids and salts, heterocyclic compounds, mercury components and products classified under 3002 10, excluding the specifically listed groups

This category covers nucleic acids and their salts, heterocyclic compounds, inorganic or organic mercury components, and products classified under 3002 10. It excludes heterocyclic compounds made only with oxygen or only with nitrogen as heteroatoms, the specified thiazole, benzothiazole and phenothiazine structures, the specifically named substances and their salts, other fentanyls and their derivatives, and the other exclusions stated in the tariff description.

For example

  • Chlorprothixene
  • Thenalidine
  • Furazolidone
  • 7-aminocephalosporanic acid
See the official tariff text

Official tariff text

Nucleic acids and their salts, whether or not chemically defined; heterocyclic compounds (excl. with oxygen only or with nitrogen hetero-atom[s] only, compounds containing in the structure an unfused thiazole ring or a benzothiazole or phenothiazine ring-system, not further fused and aminorex "INN", brotizolam "INN", clotiazepam "INN", cloxazolam "INN", dextromoramide "INN", haloxazolam "INN", ketazolam "INN", mesocarb "INN", oxazolam "INN", pemoline "INN", phendimetrazine "INN", phenmetrazine "INN", sufentanil "INN", and salts thereof, other fentanyls and their derivatives, and inorganic or organic compounds of mercury whether or not chemically defined, and products of 3002 10)

How we got to this code

  1. VI
  2. 29
  3. 2934
  4. 2934 99
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Pick the 8-digit code

Pick the description that best matches your product.

Import duty on the codes below: 0.0%

2 codes below this one

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See all 6 codes at this level

Classification decides the rate here: from 0.0% to 6.5%.

Selling to Norway, Great Britain and the United States

What they charge on arrival.

Norway, Great Britain and the United States use their own tariff lines under the 6-digit HS code. The rates below are what their customs charge on goods arriving from the EU. Match the goods against each country's own wording before you rely on a rate.

Norway

Duty free

  • Their lines2 Norwegian lines

29.34.9901 Isatoic anhydride

Norwegian tariff data checked Sept. 13, 2026.

Great Britain

The rate depends on the line.

  • Their lines70 British lines

2934 99 60 00 Chlorprothixene (INN); thenalidine (INN) and its tartrates and maleates; furazolidone

Northern Ireland follows other rules.

UK tariff data checked Sept. 13, 2026.

United States

6.5% or 15.0%

Depends on a question

  • Their lines22 US lines
  • Entry dateSept. 17, 2026

2934.99.01.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic

The US importer of record files the entry.

US tariff data checked Sept. 16, 2026.

See the 2 Norwegian lines

Selling to Norway

Norway splits the 6-digit category its own way, so these are Norway's own lines under it, not this EU code. Check your product against their wording; what Norwegian customs charges is shown per line.

  • 29.34.9901

    Isatoic anhydride

    Ordinary duty
    Duty free

  • 29.34.9909

    Other

    Ordinary duty
    Duty free

Norwegian tariff data version 1.5/1.2, last checked Sept. 13, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

See the 70 British lines

Selling to Great Britain

What UK customs charges when goods like these arrive in Great Britain.

  • 2934 99 60 00

    Chlorprothixene (INN); thenalidine (INN) and its tartrates and maleates; furazolidone (INN); 7-aminocephalosporanic acid; salts and esters of (6R,7R)-3-acetoxymethyl-7-[(R)-2-formyloxy-2-phenylacetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; 1-[2-(1,3-dioxan-2-yl)ethyl]-2-methylpyridinium bromide

    Ordinary duty
    Duty free

  • 2934 99 90 04

    Silthiofam (ISO) (CAS RN 175217-20-6) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 05

    (S)-2-Methyl-1-(6-nitropyridin-3-yl)-4-(oxetan-3-yl)piperazine (CAS RN 1895867-67-0) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 06

    Cis-[2-(2,4-Dichlorodiphenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4yl]methyl-4-methylbenzenesulfonate (CAS RN 134071-44-6) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 07

    Cedazuridine (INN) (CAS RN 1141397-80-9) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 08

    (R)-tert-butyl 2-(6-(5-chloro-2-((tetrahydro-2H-pyran-4-yl)amino)pyrimidin-4-yl)-1-oxoisoindolin-2-yl)propanoate (CAS RN 2095665-45-3) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 09

    3-[2-{(2R,3S)-3-[(1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl]-4-oxoazetidin-2-yl}propanoyl]-4,4-dimethyl-1,3-oxazolidin-2-one (isomeric mixture of CAS RNs 114341-89-8 and 114418-63-2) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 10

    Fluralaner (INN) (CAS RN 864731-61-3)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.
Show all 70 lines

  • 2934 99 90 11

    Aqueous solution of d(P-thio)(T-G-A-C-T-G-T-G-A-A-C-G-T-T-C-G-A-G-A-T-G-A) deoxyribonucleic acid (CAS RN 937402-51-2), containing by weight 15 % or more, but not more than 25 % of oligodeoxynucleotide

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 12

    Dimethomorph (ISO) (CAS RN 110488-70-5)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 13

    (6S)-6-methyl-5,6-Dihydro-4H-thieno[2,3-b]thiopyran4-one-7,7-dioxide (CAS RN 148719-91-9) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 14

    2-Mercaptoadenosine (CAS RN 43157-50-2) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 16

    Difenoconazole (ISO) (CAS RN 119446-68-3)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 17

    (S)-4-(tert-butoxycarbonyl)-1,4-oxazepane-2-carboxylic acid (CAS RN 1273567-44-4) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 18

    Methyl (1R,3R)-1-(1,3-benzodioxol-5-yl)-2-(2-chloroacetyl)-1,3,4,9-tetrahydropyrido[5,4-b]indole-3-carboxylate (CAS RN 171489-59-1) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 19

    (4R,6S)-6-Methyl-7,7-dioxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-ol (CAS RN 147128-77-6) with a purity by weight of 94 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 20

    Thiophene (CAS RN 110-02-1)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 21

    Acesulfame potassium (potassium salt of 6-methyl-1,2,3-oxathiazin-4(3H)-one 2,2-dioxide; CAS RN 55589-62-3) ace-K

    Ordinary duty
    Duty free

  • 2934 99 90 22

    4-(Oxiran-2-ylmethoxy)-9H-carbazole (CAS RN 51997-51-4) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 24

    Flufenacet (ISO) (CAS RN 142459-58-3) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 26

    4-Methylmorpholine 4-oxide in an aqueous solution (CAS RN 7529-22-8)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 27

    2-(4-Hydroxyphenyl)-1-benzothiophene-6-ol (CAS RN 63676-22-2)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 28

    11-(Piperazin-1-yl)dibenzo[b,f][1,4]thiazepine dihydrochloride (CAS RN 111974-74-4)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 30

    Dibenzo[b,f][1,4]thiazepin-11(10H)-one (CAS RN 3159-07-7)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 31

    Thenoic acid (CAS RN 1918-77-0) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 32

    (6R,7R)-Benzhydryl 3-hydroxy-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (CAS RN 54639-48-4) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 34

    Benzyl 4-(oxetan-3-yl)piperazine-1-carboxylate (CAS RN 1254115-22-4) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 35

    Nusinersen sodium (INNM) (CAS RN 1258984-36-9) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 36

    Nadide phosphate (INNM) disodium salt (CAS RN 24292-60-2) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 37

    4-Propan-2-ylmorpholine (CAS RN 1004-14-4)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 38

    2-Chloro-9H-thioxanthen-9-one (CAS RN 86-39-5) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 39

    4-(Oxiran-2-ylmethoxy)-9H-carbazole (CAS RN 51997-51-4)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 40

    2,3-Pyrazinedicarboxylic anhydride (CAS RN 4744-50-7) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 41

    11-[4-(2-Chloro-ethyl)-1-piperazinyl]dibenzo(b,f)(1,4)thiazepine (CAS RN 352232-17-8)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 45

    4-[4-[(5s)-5-(Aminomethyl)-2-oxo-3-oxazolidinyl] phenyl]-3-morpholinone, hydrochloride (CAS RN 898543-06-1) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 46

    (6R-trans)-7-Amino-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (CAS RN 58909-56-1) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 47

    2,4-Diethyl-9H-thioxanthen-9-one (CAS RN 82799-44-8) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 48

    Propan-2-ol -- 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno[2,3-b][1,5]benzodiazepine (1:2) dihydrate, (CAS RN 864743-41-9)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 49

    Cytidine 5'-(disodium phosphate) (CAS RN 6757-06-8)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 50

    Vutrisiran (INN) (CAS RN 1867157-35-4) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 51

    Uridine 5'-triphosphate trisodium salt (CAS RN 19817-92-6) with a dry weight purity of 90 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 55

    Uridine (CAS RN 58-96-8) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 56

    1-[5-(2,6-Difluorophenyl)-4,5-dihydro-1,2-oxazol-3-yl]ethanone (CAS RN 1173693-36-1)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 57

    Dimethenamide-P (ISO) (CAS RN 163515-14-8) with a purity by weight of 93 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 59

    Dolutegravir (INN) (CAS RN 1051375-16-6) or dolutegravir sodium (CAS RN 1051375-19-9)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 60

    DL-Homocysteine thiolactone hydrochloride (CAS RN 6038-19-3)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 61

    5-(1,2-dithiolan-3-yl)valeric acid (CAS RN 1077-28-7)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 63

    (2b,3a,5a,16b,17b)-2-(morpholin-4-yl)-16-(pyrrolidin-1-yl)androstane-3,17-diol (CAS RN 119302-20-4)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 64

    2-Bromo-5-benzoylthiophene (CAS RN 31161-46-3)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 65

    Benzo[b]thiophen-10-methoxycycloheptanone (CAS RN 59743-84-9) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 66

    Tetrahydrothiophene-1,1-dioxide (CAS RN 126-33-0)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 67

    5-Chlorothiophene-2-carboxylic acid (CAS RN 24065-33-6)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 69

    3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazol-2(3H)-one (CAS RN 1220696-32-1) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 70

    1,3,4-thiadiazolidine-2,5-dithione (CAS RN 1072-71-5) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 71

    3,4-Dichloro-1,2,5-thiadiazole (CAS RN 5728-20-1) with a purity by weight of 99 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 72

    2-Trifluoromethyl-9-allyl-9-thioxanthen-ol (CAS RN 850808-70-7) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 74

    2-Isopropylthioxanthone (CAS RN 5495-84-1)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 75

    (4R-cis)-1,1-Dimethylethyl-6-[2[2-(4-fluorophenyl)-5-(1-isopropyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]ethyl]-2,2-dimethyl-1,3-dioxane-4-acetate (CAS RN 125971-95-1)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 76

    Nedosiran sodium (INNM) (CAS RN 2247026-22-6) with a purity by weight of 95 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 77

    Tazemetostat (INN) (CAS 1403254-99-8) with a purity by weight of 99 % or more and its salts

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 78

    Disodium uridine-5'-monophosphate (CAS RN 3387-36-8) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 81

    1-(4-aminophenyl)-5-(morpholin-4-yl)-2,3-dihydropyridin-6-one (CAS RN 1267610-26-3) with a purity by weight of 98 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 82

    Rel-(3aR,12bR)-11-Chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrol-1-one (CAS RN 129385-59-7) with a purity by weight of 97 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 83

    Flumioxazin (ISO) (CAS RN 103361-09-7) of a purity by weight of 96 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 85

    Gilteritinib (INN) (CAS 1254053-43-4) with a purity by weight of 98 % or more and its salts

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 86

    Dithianon (ISO) (CAS RN 3347-22-6)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 87

    2,2'-(1,4-Phenylene)bis(4H-3,1-benzoxazin-4-one) (CAS RN 18600-59-4)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 88

    (7S,9aS)-7-((benzyloxy)methyl)octahydropyrazino[2,1-c][1,4]oxazine dioxalate (CAS RN 1268364-46-0)

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 89

    6R-[6α,7β(Z)]]-7-[2-Furyl(methoxyimino)acetamido]-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (CAS RN 56271-94-4) with a purity by weight of 96 % or more

    Ordinary duty
    6.0%
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

  • 2934 99 90 90

    Other

    Ordinary duty
    Depends on the product details
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1599, last checked Sept. 13, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

See the 22 US lines

Selling to the United States

What US customs charges when goods like these arrive from the EU. The US importer of record files the entry and pays the duty.

  • 2934.99.01.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Mycophenolate mofetil

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.03.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, 2-Acetylbenzo(b)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, p-nitrobenzyl ester, 1-oxide; and Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.05.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, 5-Amino-3-phenyl-1,2,4-thiadiazole (3-Phenyl-5-amino-1,2,4-thiadiazole); 2-Hydroxybenzoxazole (Benzoxazolone); 4-Phenylmorpholine; 1,9-Thianthrenedicarboxylic acid; and Thioxanthene-9-one (Thioxanthone)

    General rate
    5.8%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.06.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, 7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid and its salts

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.07.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]- phenoxy]propanoate (Fenoxaprop-ethyl)

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.08.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, 2,5-Diphenyloxazole

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.09.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, 1,2-Benzisothiazolin-3-one

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.11.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Pesticides, 2-tert-Butyl-4-(2,4-dichloro-5- isopropoxyphenyl)-Δ²-1,3,4- oxadiazolin-5-one; 3-Isopropyl-1H-2,1,3- benzothiadiazin-4-(3H)-one-2,2- dioxide (Bentazon); andO,O-Diethyl-S-[(6-chloro-2- oxobenzoxazolin-3-yl)methyl]- phosphorodithioate (Phosalone)

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
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  • 2934.99.12.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Pesticides, Other, Fungicides

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.15.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Pesticides, Other, Herbicides

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.16.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Pesticides, Other, Insecticides

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.18.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Pesticides, Other

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.20.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Photographic chemicals

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.30.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Drugs

    General rate
    6.5%
    From the EU
    6.5% or 15.0% Depends on a question US headings applied: 9903.04.62 Section 232 pharmaceuticals, Proclamation 11020 of 2 April 2026 (91 FR 18183) clauses (3)(c), (4), (5) and (7), heading 9903.04.62 of subchapter III of chapter 99 with U.S. note 40(c) and (f): the rate for patented pharmaceuticals and associated ingredients shall be 15 percent for products of the European Union, the sum of the column 1 duty rate and the additional duty being that rate; generic pharmaceuticals are not subject to tariffs pursuant to section 232 at this time; effective 31 July 2026 for the companies listed in Annex III and 29 September 2026 for other companies

  • 2934.99.39.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other, Products described in additional U.S. note 3 to section VI

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.44.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Aromatic or modified aromatic, Other

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.47.20

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Drugs, Rocuronium (INN) and its salts

    General rate
    3.7%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.47.30

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Drugs, Tacrolimus (INN) and its salts

    General rate
    3.7%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.47.40

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Drugs, Timolol maleate and its salts

    General rate
    3.7%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.47.90

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Drugs, Other

    General rate
    3.7%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.70.00

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other, Morpholinoethyl chloride hydrochloride; 2-Methyl-2,5-dioxo-1-oxa-2-phospholan; and (6R-trans)-7-Amino-3-methyl-8-oxo-5- thia-1-azabicyclo[4.2.0]-oct-2-ene-2- carboxylic acid

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 2934.99.90.01

    Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, Other

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

Worked out for an entry on Sept. 17, 2026.

US tariff schedule 2026HTSRev19, last checked Sept. 16, 2026.

Last change we recorded: Revision 19 (2026), Sept. 16, 2026.

Anti-dumping and countervailing duties, US import taxes and customs fees are not included.

The descriptions above are the US tariff texts, which the United States publishes in English only.

Source: the US International Trade Commission's Harmonized Tariff Schedule (hts.usitc.gov), public domain, and the measures published in the Federal Register.

This is a planning estimate from the US Harmonized Tariff Schedule (revision shown) and the published Federal Register measures as of the date shown, for a shipment of EU origin. It is not a customs entry, legal advice or a broker's opinion, and tariffs.help is not a US-licensed customs broker. The US importer of record or their broker confirms the classification, origin, value and the duty due before filing.

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with Toldstyrelsen, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.