2933.39: Compounds containing an unfused pyridine ring: other

1. 2933 39 00 00 Other
2. 2933 39 10 00 Iproniazid (inn); ketobemidone hydrochloride (innm); pyridostigmine bromide (inn) Free
3. 2933 39 20 00 2.3,5.6-tetrachloropyridine Free
4. 2933 39 25 00 3.6-dichloropyridine-2-carboxylic acid Free
5. 2933 39 35 00 2-hydroxyethylammonium-3.6-dichloropyridine-2-carboxylate Free
6. 2933 39 40 00 2-butoxyethyl(3.5,6-trichloro-2-pyridyloxy)acetate Free
7. 2933 39 45 00 3.5-dichloro-2.4,6-trifluoropyridine Free
8. 2933 39 50 00 Fluroxypyr (iso), methyl ester 4%
9. 2933 39 55 00 4-methylpyridine Free
10. 2933 39 99 00 Other
11. 2933 39 99 01 N-phenylpiperidin-4-amine (4-ap) (cas rn 23056-29-3) Free
12. 2933 39 99 02 Tert-butyl 4-anilinopiperidine-1-carboxylate (1-boc-4-ap) (cas rn 125541-22-2) Free
13. 2933 39 99 03 N-phenyl-n-(piperidin-4-yl)propanamide (norfentanyl) (cas rn 1609-66-1) Free
14. 2933 39 99 04 Methyl 4-aminopicolinate (cas rn 71469-93-7) with a purity by weight of 98% or more Free
15. 2933 39 99 05 2.6-bis-[1-(2-tert-butylphenylimino)-ethyl]pyridine (cas rn 204203-17-8) with a purity by weight of 95% or more Free
16. 2933 39 99 06 Tert-butyl (3s)-3-hydroxypiperidine-1-carboxylate (cas rn 143900-44-1) with a purity by weight of 97% or more Free
17. 2933 39 99 07 5-bromo-2-methoxypyridine (cas rn 13472-85-0) with a purity by weight of 99% or more Free
18. 2933 39 99 08 Fluazinam (iso) (cas rn 79622-59-6) with a purity by weight of 97% or more Free
19. 2933 39 99 09 2-(2-pyridyl)ethanol (cas rn 103-74-2) with a purity by weight of 99% or more Free
20. 2933 39 99 10 2-aminopyridin-4-ol hydrochloride (cas rn 1187932-09-7) Free
21. 2933 39 99 11 2-(chloromethyl)-4-(3-methoxypropoxy)-3-methylpyridine hydrochloride(cas rn 153259-31-5) Free
22. 2933 39 99 12 2.3-dichloropyridine (cas rn 2402-77-9) Free
23. 2933 39 99 13 Imazamox (iso) (cas rn 114311-32-9) with a purity by weight of 95% or more Free
24. 2933 39 99 15 (s)-6-bromo-2-(4-(3-(1.3-dioxoisoindolin-2-yl)propyl)-2.2-dimethylpyrrolidin-1-yl)nicotinamide (cas rn 2606972-45-4) with a purity by weight of 98% or more Free
25. 2933 39 99 16 Tert-butyl (3r)-3-aminopiperidine-1-carboxylate (cas rn 188111-79-7) with a purity by weight of 96% or more Free
26. 2933 39 99 17 2.4-dichloro-3-nitropyridine (cas rn 5975-12-2) with a purity by weight of 99% or more Free
27. 2933 39 99 18 Perfluorophenyl 6-fluoropyridine-2-sulfonate (cas rn 2608048-81-1) with a purity by weight of 98% or more Free
28. 2933 39 99 19 5-chloro-1-(4-piperidyl)-1h-benzimidazol-2(3h)-one (cas rn 53786-28-0) with a purity by weight of 99% or more Free
29. 2933 39 99 22 N-(5-bromo-3-methylpyridin-2-yl)-n-methylbenzamide (cas rn 446299-80-5) with a purity by weight of 98% or more Free
30. 2933 39 99 24 2-chloromethyl-4-methoxy-3.5-dimethylpyridine hydrochloride (cas rn 86604-75-3) Free
31. 2933 39 99 27 Pyridine-2.6-dicarboxylic acid (cas rn 499-83-2) Free
32. 2933 39 99 28 Ethyl-3-[(3-amino-4-methylamino-benzoyl)-pyridin-2-yl-amino]-propionate (cas rn 212322-56-0) Free
33. 2933 39 99 31 2-(chloromethyl)-3-methyl-4-(2.2,2-trifluoroethoxy)pyridine hydrochloride(cas rn 127337-60-4) Free
34. 2933 39 99 32 2-(chloromethyl)-3.4-dimethoxypyridine hydrochloride (cas rn 72830-09-2) Free
35. 2933 39 99 33 5-(3-chlorophenyl)-3-methoxypyridine-2-carbonitrile (cas rn 1415226-39-9) Free
36. 2933 39 99 34 Pyridin-3-ol (cas rn 109-00-2) with a purity by weight of 98% or more Free
37. 2933 39 99 35 Aminopyralid (iso) (cas rn 150114-71-9) Free
38. 2933 39 99 36 1-[2-[5-methyl-3-(trifluoromethyl)-1h-pyrazol-1-yl]acetyl]piperidine-4-carbothioamide (cas rn 1003319-95-6) Free
39. 2933 39 99 37 Aqueous solution of pyridine-2-thiol-1-oxide, sodium salt (cas rn 3811-73-2) Free
40. 2933 39 99 38 (2-chloropyridin-3-yl) methanol (cas rn 42330-59-6) Free
41. 2933 39 99 40 2-hydroxypyridine-n-oxide (cas rn 13161-30-3) with a purity by weight of 98% or more Free
42. 2933 39 99 42 Glasdegib maleate (inn) (cas rn 2030410-25-2) with a purity by weight of 98% or more Free
43. 2933 39 99 44 Fluroxypyr-meptyl (cas rn 81406-37-3) with a purity by weight of 95% or more Free
44. 2933 39 99 45 2.4-dichloropyridine-3-carboxaldehyde (cas rn 134031-24-6) with a purity by weight of 95% or more Free
45. 2933 39 99 46 Fluopicolide (iso) (cas rn 239110-15-7) with a content by weight of 97% or more Free
46. 2933 39 99 47 (-)-trans-4-(4'-fluorophenyl)-3-hydroxymethyl-n-methylpiperidine (cas rn 105812-81-5) Free
47. 2933 39 99 48 Flonicamid (iso) (cas rn 158062-67-0) Free
48. 2933 39 99 49 2-phenyl-2-(2-pyridyl)acetamide (cas rn 7251-52-7) with a purity by weight of 98% or more Free
49. 2933 39 99 50 N,4-dimethyl-1-(phenylmethyl)- 3-piperidinamine hydrochloride (1:2) (cas rn 1228879-37-5) with a purity by weight of 98% or more Free
50. 2933 39 99 51 2-amino-3-bromo-5-nitropyridine (cas rn 15862-31-4) with a purity by weight of 98% or more Free
51. 2933 39 99 53 5-methyl-2-pyridylamine (cas rn 1603-41-4) with a purity by weight of 99% or more Free
52. 2933 39 99 54 2.5-dichloro-4.6-dimethylpyridine-3-carbonitrile (cas rn 91591-63-8) with a purity by weight of 99% or more Free
53. 2933 39 99 55 Pyriproxyfen (iso) (cas rn 95737-68-1) of a purity by weight of 97% or more Free
54. 2933 39 99 56 2-[[[3-methyl-4-(2.2,2-trifluoroethoxy)pyridin-2-yl]methyl]sulfanyl]1h-benzimidazole (cas rn 103577-40-8) with a purity by weight of 99% or more Free
55. 2933 39 99 57 Tert-butyl 3-(6-amino-3-methylpyridin-2-yl)benzoate (cas rn 1083057-14-0) Free
56. 2933 39 99 58 Tert-butyl n-[5-(trifluoromethyl)pyridin-3-yl]carbamate (cas rn 1187055-61-3) with a purity by weight of 98% or more Free
57. 2933 39 99 60 2-fluoro-6-(trifluoromethyl)pyridine (cas rn 94239-04-0) Free
58. 2933 39 99 62 Ethyl 2.6-dichloronicotinate (cas rn 58584-86-4) Free
59. 2933 39 99 63 1-methyl-4-piperidone (cas rn 1445-73-4) with a purity by weight of 97% or more Free
60. 2933 39 99 65 Acetamiprid (iso) (cas rn 135410-20-7) Free
61. 2933 39 99 66 (2s,4s)-4-ethoxy-2-[4-(methoxycarbonyl)phenyl]piperidin-1-ium(2z)-3-carboxyprop-2-enoate (cas rn 2408761-21-5) with a purity by weight of 98% or more Free
62. 2933 39 99 68 1-(3-chloropyridin-2-yl)-3-[[5-(trifluoromethyl)-2h-tetrazol-2-yl]methyl]-1h-pyrazole-5-carboxylic acid (cas rn 1352319-02-8) with a purity by weight of 85% or more Free
63. 2933 39 99 70 2.3-dichloro-5-trifluoromethylpyridine, (cas rn 69045-84-7) Free
64. 2933 39 99 72 N-[(1s,5r)-8-benzyl-8-azabicyclo[3.2.1]octane-3-yl]-2-methylpropanamide (cas rn 376348-67-3) with a purity by weight of 98% or more Free
65. 2933 39 99 73 6-chloro-4-(4-fluoro-2-methylphenyl)pyridin-3-amine hydrochloride Free
66. 2933 39 99 75 Clodinafop-propargyl (iso) (cas rn 105512-06-9) with a purity by weight of 90% or more Free
67. 2933 39 99 76 Apalutamide (inn) (cas rn 956104-40-8) Free
68. 2933 39 99 78 Niraparib tosylate monohydrate (innm) (cas rn 1613220-15-7) Free
69. 2933 39 99 80 Tert-butyl (3r)-3-(4-amino-2-oxo-2.3-dihydro-1h-imidazo[4, 5-c]pyridin-1-yl)piperidine-1-carboxylate (cas rn 1971921-33-1) with a purity by weight of 95% or more Free
70. 2933 39 99 81 4-hydroxy-3-pyridinesulphonic acid (cas rn 51498-37-4) with a purity by weight of 98% or more Free
71. 2933 39 99 82 Picloram (iso) (cas rn 1918-02-1) containing by weight not more than 15% of water and with a dry weight purity of 92% or more Free
72. 2933 39 99 84 Diethyl(3-pyridyl)borane (cas rn 89878-14-8) with a purity by weight of 98% or more Free
73. 2933 39 99 85 2-chloro-5-chloromethylpyridine (cas rn 70258-18-3) Free
74. 2933 39 99 88 (1r,2s,4r)-2-benzhydrylquinuclidin-3-one (2r,3r)-2.3-dihydroxysuccinate (cas rn 683206-54-4) with a purity by weight of 98% or more Free
75. 2933 39 99 89 1-benzyl-4-phenylpiperidine-4-carbonitrile monohydrochloride (cas rn 71258-18-9) with a purity by weight of 98% or more Free
76. 2933 39 99 91 Piperidin-4-one cas no 41661-47-6 Free
77. 2933 39 99 92 Tert-butyl 4-oxopiperidine-1-carboxylate cas no 79099-07-3 Free
78. 2933 39 99 93 Boscalid (iso) (cas rn 188425-85-6) with a purity by weight of 98% or more Free
79. 2933 39 99 94 Cyantraniliprole (iso) (cas rn 736994-63-1) with a purity by weight of 90% or more Free
80. 2933 39 99 95 Fluopyram (iso) (cas rn 658066-35-4) with a purity by weight of 96.5% or more Free
81. 2933 39 99 99 Other Free

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Preferential rates by country

UK: imports by month

last 12 months£128.3m-40.2% · previous 12 months

Average import price£36.44 per kg

Main suppliers, last 12 months

Country	Value	Share	Change
India	£40.5m	31.5%	-70.4%
Switzerland	£35.5m	27.7%	+130.1%
China	£31.6m	24.7%	-6.2%
Singapore	£5.8m	4.5%	-6%
United States	£4.5m	3.5%	-56.2%
Germany	£1.8m	1.4%	+5.5%
Spain	£1.4m	1.1%	-23%
France	£1.3m	1%	-3.3%

Same subheading in other tariffs

EU Free – 6.5% Third-country duty 9 tariff lines · average 1.2% Türkiye Free – 6.5% Third-country duty 25 tariff lines · average 4.1% USA Free – 6.5% General (MFN) 11 tariff lines · average 5.3% Canada Free Third-country duty 8 tariff lines Mexico Free – 5% Third-country duty 13 tariff lines · average 1.5% Brazil Free – 12.6% Third-country duty 37 tariff lines · average 4.6% Argentina Free – 12.6% Third-country duty 84 tariff lines · average 2% Peru Free Third-country duty 6 tariff lines New Zealand Free Third-country duty 5 tariff lines Japan Free – 3.1% Third-country duty 3 tariff lines · average 1% Taiwan Free – 5% Third-country duty 6 tariff lines · average 2.9% GCC 5% Third-country duty 4 tariff lines Switzerland Free Third-country duty 1 tariff line Norway Free Third-country duty 4 tariff lines North Macedonia Free Third-country duty 10 tariff lines Nigeria 5% Third-country duty 1 tariff line

World trade in 2024

Top exporters

Rank	Country	Value	Share
1	China	US$3bn	23.7%
2	Switzerland	US$1bn	12.6%
3	India	US$1bn	12%
4	Ireland	US$867m	7.9%
5	United States	US$761m	6.9%
6	Germany	US$601m	5.5%
7	France	US$571m	5.2%
8	Belgium	US$437m	4%
9	Italy	US$386m	3.5%
10	Japan	US$359m	3.3%

Top importers

Rank	Country	Value	Share
1	Germany	US$2bn	14.3%
2	United States	US$1bn	11.5%
3	Brazil	US$1bn	9.2%
4	Slovenia	US$645m	5.9%
5	China	US$466m	4.2%
6	France	US$459m	4.2%
7	Spain	US$441m	4%
8	Belgium	US$421m	3.8%
9	India	US$389m	3.5%
10	Japan	US$378m	3.4%

Import duty on this product around the world 163

The most-favoured-nation (MFN) duty each country applies to goods of this HS subheading: the average over its national tariff lines, with the lowest and highest line where they differ. Goods from countries with a trade agreement often pay less.

• 4%median duty
• 60number of duty-free countries (MFN)
• 45%highest: Bahamas, Bermuda, Cayman Islands

163

Importing country	MFN duty	lines from – to	data year
Afghanistan	5%		2018 · HS 2012
Albania	0%		2023
Algeria	15%		2023
Angola	0%		2023 · HS 2017
Anguilla	10%		2021 · HS 2017
Antigua & Barbuda	5%		2021 · HS 2007
Argentina	6.6%	2% – 14%	2023 · HS 2017
Armenia	3.7%	0% – 5%	2023
Aruba	6%		2021 · HS 2012
Australia	0%		2023
Azerbaijan	0%		2023 · HS 2017
Bahamas	45%		2022
Bahrain	5%		2023
Bangladesh	0%		2023 · HS 2017
Barbados	5%		2022 · HS 2017
Belarus	3.7%	0% – 5%	2021 · HS 2017
Belize	5%		2023
Benin	5%		2023
Bermuda	25%		2023
Bhutan	10%		2022
Bolivia	5%		2023 · HS 2017
Bosnia & Herzegovina	0%		2022
Botswana	0%		2023
Brazil	6.6%	2% – 14%	2023 · HS 2017
Brunei	0%		2023 · HS 2017
Burkina Faso	5%		2023
Burundi	0%		2023
Cambodia	7%		2023 · HS 2017
Cameroon	10%		2023
Canada	0%		2023
Cape Verde	5%		2023 · HS 2017
Cayman Islands	22%		2021 · HS 2002
Central African Republic	10%		2023
Chad	10%		2023
Chile	6%		2023 · HS 2017
China	6.5%		2023
Colombia	0%		2023 · HS 2017
Comoros	20%		2021 · HS 2017
Congo - Brazzaville	10%		2023
Cook Islands	0%		2022 · HS 2017
Costa Rica	0%		2023
Côte d’Ivoire	5%		2023 · HS 2017
Cuba	10%		2023 · HS 2017
Dominica	5%		2023 · HS 2017
Dominican Republic	0%		2023
Ecuador	0%		2023 · HS 2017
Egypt	2%		2019 · HS 2017
El Salvador	0%		2022
Equatorial Guinea	10%		2023
Eswatini	0%		2023
Ethiopia	15%	10% – 20%	2021 · HS 2017
European Union (27 countries)	0.7%	0% – 6.5%	2023
Fiji	5%		2023
French Polynesia	8%		2023
Gabon	10%		2023
Gambia	5%		2023
Georgia	0%		2022 · HS 2017
Ghana	5%		2023
Gibraltar	12%		2023 · HS 2017
Grenada	5%		2023 · HS 2012
Guatemala	0%		2023
Guinea	5%		2023
Guinea-Bissau	5%		2023
Guyana	5%		2023 · HS 2017
Haiti	0%		2020 · HS 2017
Honduras	0%		2023
Hong Kong SAR China	0%		2023
Iceland	0%		2023
India	7.5%		2023
Indonesia	1.7%	0% – 5%	2023
Iran	12%	5% – 26%	2020 · HS 2017
Israel	5.3%	0% – 8%	2022 · HS 2017
Jamaica	0%		2023
Japan	0.5%	0% – 1.6%	2023
Jordan	0%		2023
Kazakhstan	3.7%	0% – 5%	2023
Kenya	0%		2023
Kiribati	0%		2023 · HS 2002
Kuwait	5%		2023
Kyrgyzstan	3.7%	0% – 5%	2021 · HS 2017
Laos	5%		2023 · HS 2017
Lebanon	0%		2020 · HS 2017
Lesotho	0%		2023
Liberia	5%		2023
Libya	5%		2021 · HS 2017
Liechtenstein	0%		2021 · HS 2017
Macao SAR China	0%		2023
Madagascar	5%		2023
Malawi	0%		2021 · HS 2017
Malaysia	0%		2023
Maldives	15%		2023
Mali	5%		2023
Mauritania	5%		2023 · HS 2017
Mauritius	0%		2023
Mexico	3.3%	0% – 5%	2023 · HS 2017
Micronesia	4%		2021 · HS 2017
Moldova	0%		2023 · HS 2017
Montserrat	0%		2023 · HS 2017
Morocco	2.5%		2023
Mozambique	2.5%		2023
Myanmar (Burma)	3%		2023 · HS 2017
Namibia	0%		2023
Nauru	10%		2021 · HS 2017
Nepal	10%		2023
New Zealand	0%		2023
Nicaragua	0%		2023
Niger	5%		2023
Nigeria	5%		2023
North Macedonia	0%		2023
Norway	0%		2023
Oman	5%		2023
Pakistan	6.2%	0% – 20%	2023
Palau	3%		2023 · HS 2012
Palestinian Territories	5.3%	0% – 8%	2017 · HS 2017
Panama	3%	0% – 6%	2023
Papua New Guinea	0%		2023
Paraguay	5.6%	0% – 14%	2023 · HS 2017
Peru	0%		2023 · HS 2017
Philippines	1%		2023
Qatar	5%		2023
Russia	3.7%	0% – 5%	2021 · HS 2017
Rwanda	0%		2023
Samoa	8%		2020 · HS 2017
Saudi Arabia	5%		2023
Senegal	5%		2023
Seychelles	0%		2023
Sierra Leone	5%		2023
Singapore	0%		2023 · HS 2017
Solomon Islands	5%		2023 · HS 2017
Somalia	5%		2023 · HS 2017
South Africa	0%		2023
South Korea	5%	2% – 6.5%	2023
Sri Lanka	0%		2023
St Kitts & Nevis	0%		2023
St Lucia	5%		2023 · HS 2012
St Pierre & Miquelon	8%		2021 · HS 2017
St Vincent & the Grenadines	5%		2023
Sudan	3%		2021 · HS 2017
Suriname	5%		2023 · HS 2007
Switzerland	0%		2023
Syria	1%		2020 · HS 2012
Tajikistan	0%		2021 · HS 2012
Tanzania	0%		2023
Thailand	0%		2023
Togo	5%		2023
Tonga	15%		2023 · HS 2017
Trinidad & Tobago	0%		2023 · HS 2012
Türkiye	1.2%	0% – 6.5%	2023
Tuvalu	0%		2017 · HS 2017
Uganda	0%		2023
Ukraine	0%		2023 · HS 2017
United Arab Emirates	5%		2023
United Kingdom	0.1%	0% – 4%	2023
United States	5.3%	0% – 6.5%	2023
Uruguay	6.6%	2% – 14%	2023 · HS 2017
Uzbekistan	0%		2021 · HS 2017
Vanuatu	5%		2023
Venezuela	6.6%	2% – 14%	2023 · HS 2017
Vietnam	0%		2023
Wallis & Futuna	6%		2021 · HS 2012
Yemen	5%		2017 · HS 2017
Zambia	0%		2023
Zimbabwe	0.1%		2023

Tariff data years 2017–2023; rates may have changed since. · UNCTAD TRAINS, accessed via WITS (World Bank)

Classifications and correspondences

Where this HS subheading sits in the United Nations' statistical classifications, and which codes it had in earlier editions of the Harmonized System.

SITC Rev. 4

51574 Heterocyclic compounds containing an unfused pyridine ring

End use (BEC Rev. 5)

Intermediate goods · BEC 211220

CPC 2.1 product

34160 Organo-sulphur compounds and other organo-inorganic compounds; heterocyclic compounds n.e.c.; nucleic acids and their salts

ISIC Rev. 4 activity

2011 Manufacture of basic chemicals

Earlier HS editions

Correspondence tables of the United Nations Statistics Division (UNSD)

Binding rulings for similar goods 31

Recent rule changes mentioning this code

Acts whose text cites this code or its heading. Check the act itself: a code can be cited for reasons other than a change of its duty.

1. Tariff change 23 September 2026

   Guidance and Procedures for Implementing Tariff Adjustments for Specialty Pharmaceuticals and Associated Pharmaceutical Ingredients and Technical Corrections to the Harmonized Tariff Schedule of the United States for Duties Imposed Under Proclamation 11020

   FR Doc. 2026-19498 · 91 FR 60360 · Source: federalregister.gov

2. Import and export controls 20 July 2026

   Notice of Action: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation

   FR Doc. 2026-14542 · 91 FR 45516 · Source: federalregister.gov

3. Other 1 July 2026

   Update to Commodity Code structure to maintain dynamic alignment with the EU – 1 July 2026

   Trade Tariff news 7027 · Source: trade-tariff.service.gov.uk

4. Suspension 30 June 2026 · Applies from: 16 July 2026

   Council Regulation (EU) 2026/1463 of 25 June 2026 amending Regulation (EU) 2021/2278 suspending the Common Customs Tariff duties referred to in Article 56(2), point (c), of Regulation (EU) No 952/2013 of the European Parliament and of the Council on certain agricultural and industrial products

   CELEX 32026R1463 · Source: eur-lex.europa.eu

5. Quota 30 June 2026 · Applies from: 12 July 2026

   Council Regulation (EU) 2026/1465 of 25 June 2026 amending Regulation (EU) 2021/2283 opening and providing for the management of autonomous tariff quotas of the Union for certain agricultural and industrial products

   CELEX 32026R1465 · Source: eur-lex.europa.eu

6. Other 30 June 2026

   Update to Commodity Code structure to maintain dynamic alignment with the EU – 30 June 2026

   Trade Tariff news 6995 · Source: trade-tariff.service.gov.uk

7. Tariff change 22 June 2026 · Applies from: 1 July 2026

   Harmonized Tariff Schedule of the United States — 2026 HTS Revision 11

   2026HTSRev11 · Source: hts.usitc.gov

8. Tariff change 4 June 2026

   Notice of Determination and Request for Comments Concerning Action Pursuant to Section 301: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation

   FR Doc. 2026-11158 · 91 FR 33854 · Source: federalregister.gov

Rule changes →

Questions and answers