tariffs.help
Log in Create free account

Code 2933 99 · Heading 2933

Other nitrogen-only heterocyclic compounds, excluding specified ring types, lactams and listed products

This code covers heterocyclic compounds whose heteroatoms are only nitrogen, except compounds with the specified pyrazole, imidazole, pyridine, quinoline or isoquinoline, pyrimidine, triazine or piperazine structures, as well as lactams and the specifically listed products and their salts. It includes the products named under the more detailed tariff lines within this code, such as indole and the specified benzotriazole phenol.

For example

  • Indole
  • 3-methylindole (skatole)
  • Imipramine hydrochloride
  • 2,4-di-tert-butyl-6-[5-chlorobenzotriazol-2-yl]phenol
Save Browse the codes below
See the official tariff text

Official tariff text

Heterocyclic compounds with nitrogen hetero-atom[s] only (excl. those containing an unfused pyrazole, imidazole, pyridine or triazine ring, whether or not hydrogenated, a quinoline or isoquinoline ring-system, not further fused, whether or not hydrogenated, a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, and lactams, alprazolam "INN", camazepam "INN", chlordiazepoxide "INN", clonazepam "INN", clorazepate, delorazepam "INN", diazepam "INN", estazolam "INN", ethyl loflazepate "INN", fludiazepam "INN", flunitrazepam "INN", flurazepam "INN", halazepam "INN", lorazepam "INN", lormetazepam "INN", mazindol "INN", medazepam "INN", midazolam "INN", nimetazepam "INN", nitrazepam "INN", nordazepam "INN", oxazepam "INN", pinazepam "INN", prazepam "INN", pyrovalerone "INN", temazepam "INN", tetrazepam "INN" and triazolam "INN", salts thereof and azinphos-methyl "ISO")

Full 8-digit codes

Pick the description that best matches your product.

3 codes below this one

Compare the sibling codes

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

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

  • 29.33.9900

    Other

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

Norwegian tariff data version 1.5/1.2, last checked Aug. 9, 2026.

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

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

  • 2933 99 20 00

    Indole, 3-methylindole (skatole), 6-allyl-6,7-dihydro-5H-dibenz[c,e]azepine (azapetine), phenindamine (INN) and their salts; imipramine hydrochloride (INNM)

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

  • 2933 99 50 00

    2,4-Di-tert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol

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

  • 2933 99 80 01

    3-Cyanoindole (CAS RN 5457-28-3) with a purity by weight of 98 % or more

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

  • 2933 99 80 02

    (S)-1-Benzyl-3-pyrrolidinol (CAS RN 101385-90-4) with a purity by weight of 98 % or more

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

  • 2933 99 80 03

    Tert-butyl 4-formyl-5-methoxy-7-methyl-1H-indole-1-carboxylate (CAS RN 1481631-51-9) with a purity by weight of 97 % or more

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

  • 2933 99 80 04

    (S)-2,5-Dihydro-pyrrole-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (CAS RN 74844-93-2) with a purity by weight of 97 % or more

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

  • 2933 99 80 05

    1,4,7,10-Tetraazacyclododecane (CAS RN 294-90-6) with a purity by weight of 96 % or more

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

  • 2933 99 80 07

    4-(2-Oxo-2,3-dihydro-1H-benzimidazol-1-yl)butanoic acid (CAS RN 3273-68-5) with a purity by weight of 98 % or more

    Ordinary duty
    Duty free
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.
Show all 71 lines

  • 2933 99 80 08

    Prothioconazole (ISO) (CAS RN 178928-70-6) with a purity by weight of 98 % or more

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

  • 2933 99 80 09

    5,7-Difluoro-2-(4-fluorophenyl)-1H-indole (CAS RN 901188-04-3) with a purity by weight of 98 % or more

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

  • 2933 99 80 10

    (R)-2-(2,5-difluorophenyl)pyrrolidine hydrochloride (CAS RN 1218935-60-4) with a purity by weight of 98 % or more

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

  • 2933 99 80 13

    5-Difluormethoxy-2-mercapto-1-H-benzimidazole (CAS RN 97963-62-7)

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

  • 2933 99 80 16

    Pyridate (ISO)(CAS RN 55512-33-9) with a purity by weight of 90 % or more

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

  • 2933 99 80 18

    2-(2-Ethoxyphenyl)-5-methyl-7-propylimidazolo[5,1-f][1,2,4]-triazin-4(3H)-one (CAS RN 224789-21-3) with a purity by weight of 95 % or more

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

  • 2933 99 80 21

    1-(Bis(dimethylamino)methylene)-1H-[1,2,3]triazolo[4,5-b]pyridinium 3-oxide hexafluorophosphate(V) (CAS RN 148893-10-1)

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

  • 2933 99 80 22

    Dibenz[b,f]azepine-5-carbonyl chloride (CAS RN 33948-22-0) with a purity by weight of 98 % or more

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

  • 2933 99 80 23

    Tebuconazole (ISO) (CAS RN 107534-96-3) with a purity by weight of 95 % or more

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

  • 2933 99 80 24

    1,3-Dihydro-5,6-diamino-2H-benzimidazol-2-one (CAS RN 55621-49-3)

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

  • 2933 99 80 25

    6-(4-Benzylamino-3-nitrophenyl)-5-methyl-4,5-dihydro-2H-pyridazin-3-one (CAS RN 77469-62-6) with a purity by weight of 95 % or more

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

  • 2933 99 80 26

    Benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate (CAS RN 128625-52-5) with a purity by weight of 97 % or more

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

  • 2933 99 80 27

    5,6-Dimethylbenzimidazole (CAS RN 582-60-5)

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

  • 2933 99 80 28

    7-(2-Methyl-4-nitrophenoxy)-[1,2,4]triazolo[1,5-a]pyridine (CAS RN 937263-44-0) with a purity by weight of 98 % or more

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

  • 2933 99 80 29

    1,1-Dimethylethyl (4S)-3-amino-2-(4-fluoro-3,5-dimethylphenyl)-2,4,6,7-tetrahydro-4-methyl-5H-pyrazolo[4,3-c]pyridine-5-carboxylate (CAS RN 2212021-59-3) with a purity by weight of 99 % or more

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

  • 2933 99 80 30

    Quizalofop-P-ethyl (ISO) (CAS RN 100646-51-3)

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

  • 2933 99 80 31

    2-(2H-Benzotriazol-2-yl)-6-(2-phenylpropan-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol (CAS RN 73936-91-1) with a purity by weight of 97 % or more

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

  • 2933 99 80 32

    1H-1,2,3-Triazole (CAS RN 288-36-8) or 2H-1,2,3-triazole (CAS RN 288-35-7) with a purity by weight of 99 % or more

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

  • 2933 99 80 33

    Penconazole (ISO) (CAS RN 66246-88-6)

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

  • 2933 99 80 34

    2,4-Dihydro-5-methoxy-4-methyl-3H-1,2,4-triazol-3-on (CAS RN 135302-13-5)

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

  • 2933 99 80 35

    2-[6-Methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridin-3-yl]acetic acid (CAS RN 189005-44-5) with a purity by weight of 98 % or more

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

  • 2933 99 80 37

    8-Chloro-5,10-dihydro-11H-dibenzo [b,e] [1,4]diazepin-11-one (CAS RN 50892-62-1)

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

  • 2933 99 80 38

    (4aS,7aS)-Octahydro-1H-pyrrolo[3,4-b]pyridine (CAS RN 151213-40-0)

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

  • 2933 99 80 40

    trans-4-Hydroxy-L-proline (CAS RN 51-35-4)

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

  • 2933 99 80 41

    5-[4'-(bromomethyl)biphenyl-2-yl]-1-trityl-1H-tetrazole (CAS RN 124750-51-2)

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

  • 2933 99 80 42

    (S)-2,2,4-Trimethylpyrrolidine hydrochloride (CAS RN 1897428-40-8)

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

  • 2933 99 80 43

    4-([1,2,4]Triazolo[1,5-a]pyridin-7-yloxy)-3-methylaniline (CAS RN 937263-71-3) with a purity by weight of 98 % or more

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

  • 2933 99 80 44

    (2R,3R)-2-(2,4-Difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butane-2,3-diol methanesulfonate (CAS RN 1175536-50-1) with a purity by weight of 98 % or more

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

  • 2933 99 80 46

    (S)-indoline-2-carboxylic acid (CAS RN 79815-20-6)

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

  • 2933 99 80 48

    5-Amino-6-methyl-2-benzimidazolone (CAS RN 67014-36-2)

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

  • 2933 99 80 49

    Tert-butyl (2S)-2-carbamoylpyrrolidine-1-carboxylate (CAS RN 35150-07-3) with a purity by weight of 97 % or more

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

  • 2933 99 80 50

    Tert-butyl (3R)-3-aminopyrrolidine-1-carboxylate (CAS RN 147081-49-0) with a purity by weight of 97 % or more

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

  • 2933 99 80 51

    (1R,5R)-Ethyl 3-benzyl-3-azabicyclo[3.1.0]hexane-1-carboxylate hydrochloride (CAS RN 2914217-81-3) with a purity by weight of 97 % or more

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

  • 2933 99 80 52

    (S)-2-Methylpyrrolidine-2-carboxylic acid hydrochloride (CAS RN 1508261-86-6) with a purity by weight of 98 % or more

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

  • 2933 99 80 55

    Pyridaben (ISO) (CAS RN 96489-71-3)

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

  • 2933 99 80 56

    Methyl 3,5-diamino-6-chloropyrazine-2-carboxylate (CAS RN 1458-01-1)

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

  • 2933 99 80 57

    2-(5-Methoxyindol-3-yl)ethylamine (CAS RN 608-07-1)

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

  • 2933 99 80 60

    2-[(6,11-Dihydro-5H-dibenz[b,e]azepin-6-yl)-methyl]-1H-isoindole-1,3(2H)-dione (CAS RN 143878-20-0) with a purity by weight of 99 % or more

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

  • 2933 99 80 61

    (1R,5S)-8-Benzyl-8-azabicyclo(3.2.1)octan-3-one hydrochloride (CAS RN 83393-23-1)

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

  • 2933 99 80 62

    6-O-tert-butyl 4a-O-methyl (4a)-1-(4-fluorophenyl)-4,5,7,8-tetrahydropyrazolo[3,4-g]isoquinoline-4a,6-dicarboxylate (CAS RN 864972-21-4) with a purity by weight of 95 % or more

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

  • 2933 99 80 63

    L-Prolinamide (CAS RN 7531-52-4)

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

  • 2933 99 80 64

    (1R,2S,5S)-3-[(S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid (CAS RN 2755812-45-2) with a purity by weight of 95 % or more

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

  • 2933 99 80 65

    2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (CAS RN 70321-86-7) with a purity by weight of 99 % or more

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

  • 2933 99 80 67

    Candesartan ethyl ester (INNM), (CAS RN 139481-58-6)

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

  • 2933 99 80 68

    5-((1S,2S)-2-((2R,6S,9S,11R,12R,14aS,15S,16S,20R,23S,25aR)-9-amino-20-((R)-3-amino-1-hydroxy-3-oxopropyl)-2,11,12,15-tetrahydroxy-6-((R)-1-hydroxyethyl)-16-methyl-5,8,14,19,22,25-hexaoxotetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-23-yl)-1,2-dihydroxyethyl)-2-hydroxyphenyl hydrogen sulphate (CAS RN 168110-44-9)

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

  • 2933 99 80 70

    5-(Bis-(2-hydroxyethyl)-amino)-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester (CAS RN 3543-74-6) with a purity by weight of 98 % or more

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

  • 2933 99 80 71

    10-Methoxyiminostilbene (CAS RN 4698-11-7)

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

  • 2933 99 80 72

    1,4,7-Trimethyl-1,4,7-Triazacyclononane (CAS RN 96556-05-7)<br>

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

  • 2933 99 80 73

    5-(acetoacetylamino)benzimidazolone (CAS RN 26576-46-5)

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

  • 2933 99 80 74

    N,N-Dimethyl-N-octadecyl-1-octadecanaminium (SP-4-2)-[29H,31H-phthalocyanine-2-sulfonato-N29,N30,N31,N32]cuprate (CAS RN 70750-63-9) with a purity by weight of 90 % or more

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

  • 2933 99 80 75

    1-[Bis(dimethylamino)methylene]-1H-benzotriazolium hexafluorophosphate(1-) 3-oxide (CAS RN 94790-37-1)​

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

  • 2933 99 80 76

    2-Methylindoline (CAS RN 6872-06-6) with a purity by weight of 98 % or more

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

  • 2933 99 80 78

    3-Amino-3-azabicyclo (3.3.0) octane hydrochloride (CAS RN 58108-05-7)

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

  • 2933 99 80 79

    2-(2H-benzotriazol- 2-yl)-4,6-di-tert-pentylphenol (UV-328) – ( CAS No 25973-55-1)

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

  • 2933 99 80 80

    Pyrrole-2-carboxaldehyde (CAS RN 1003-29-8) with a purity by weight of 97 % or more

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

  • 2933 99 80 81

    1,2,3-Benzotriazole (CAS RN 95-14-7)

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

  • 2933 99 80 82

    Tolytriazole (CAS RN 29385-43-1)

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

  • 2933 99 80 83

    1-(3-Chloropropyl)-1,3-dihydro-2H-benzimidazol-2-one (CAS RN 62780-89-6) with a purity by weight of 97 % or more

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

  • 2933 99 80 84

    Allyl (2S,4S)-4-benzoylsulfanyl-2-(dimethylcarbamoyl)pyrrolidine-1-carboxylate (CAS RN 141818-73-7) with a purity by weight of 96 % or more

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

  • 2933 99 80 85

    2-benzotriazol-2-yl-4,6-di-tert-butylphenol (UV-320) (CAS RN 3846-71-7)

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

  • 2933 99 80 86

    2-(2H-benzotriazol-2-yl)-4-(tert-butyl)-6- (sec-butyl)phenol (UV-350) (CAS RN 36437-37-3)<br>

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

  • 2933 99 80 87

    Carfentrazone-ethyl (ISOM) (CAS RN 128639-02-1) with a purity by weight of 90 % or more

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

  • 2933 99 80 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 v4.0.1576, last checked Aug. 3, 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).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 27 codes at this level
Previous code 2933 92

Azinphos-methyl "ISO"
you are here 2933 99

Heterocyclic compounds with nitrogen hetero-atom[s] only (excl. those…

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, 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.