HS code · 6-digit subheading

HS Code 2934.99 – Nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934

HS code 2934.99 is the 6-digit subheading for nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934. It is used for DNA, RNA, adenosine triphosphate (ATP), guanosine monophosphate (GMP) and cytidine.

What HS 2934.99 covers

This broad "catch-all" category encompasses a wide array of heterocyclic compounds that contain both sulfur and nitrogen atoms in their ring structure, but are not specifically classified elsewhere within heading 2934, and also includes nucleic acids and their salts. This makes it a highly diverse category, covering everything from advanced biochemicals to specialized industrial intermediates. Major importers are countries with strong biotechnology, pharmaceutical, and chemical research and manufacturing sectors, such as the United States, Germany, Japan, and China, which require these compounds for R&D, diagnostics, and production. Exporters are typically global chemical and biochemical suppliers. Key aspects of their trade include the high value and purity requirements for many of these specialized compounds, the rapid pace of innovation in biotechnology, and the need for precise chemical identification to avoid misclassification. The market is driven by advancements in genetic research, drug discovery, and material science.

Covers
  • DNA
  • RNA
  • Adenosine triphosphate (ATP)
  • Guanosine monophosphate (GMP)
  • Cytidine
  • Uridine
  • Thioctic acid
  • Biotin
  • Lipoic acid
Examples
  • PCR reagents (DNA/RNA components)
  • CRISPR gene-editing components
  • Coenzyme A (contains sulfur/nitrogen heterocycle)
  • Vitamin H (Biotin)

Codes often confused with 2934.99

Common mistake. This is the ultimate "other" category for 2934, making it prone to confusion with almost any other specific 2934 code if the compound's exact structure isn't clearly defined. It's also distinct from 2933 (nitrogen heterocycles without sulfur) and 2935 (sulfonamides).

29.34Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds29.33Heterocyclic compounds with nitrogen hetero-atom(s) only29.35Sulphonamides

Top exporters and importers of HS code 293499, 2025

In 2025, the largest exporter of HS code 293499 in UN Comtrade data was Ireland, with 22% of world exports; the largest importer in UN Comtrade data was the United States, with 30% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 Ireland $6.3B
  2. 2 China $4.5B
  3. 3 Switzerland $3.5B

World total: $28.8B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $9.3B
  2. 2 Germany $5.0B
  3. 3 Austria $1.7B

World total: $30.9B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for 2934.99 37

Brazil splits HS 2934.99 into 37 NCM codes, Mercosur's 8-digit tariff lines.

  1. 2934.99.1 Containing an oxazine ring (whether or not hydrogenated) in the structure, other than those containing sulphur hetero-atom(s)Cuja estrutura contém um ciclo oxazina (hidrogenado ou não), exceto os que contenham heteroátomo(s) de enxofre Group
  2. 2934.99.11 Morpholine and its saltsMorfolina e seus sais
  3. 2934.99.12 Pirenoxine sodium (catalin sodium)Pirenoxina sódica (catalino sódico)
  4. 2934.99.13 NimorazoleNimorazol
  5. 2934.99.14 Isatoic anhydrideAnidrido isatoico (2H-3,1-benzoxazina-2,4-(1H)-diona)
  6. 2934.99.15 4,4'-Dithiodimorpholine4,4'-Ditiodimorfolina
  7. 2934.99.19 Other oxazine ring compounds without sulphurOutros
  8. 2934.99.2 Containing in the structure exclusively 3 nitrogen and oxygen hetero-atoms together, other than nucleic acids and their salts and products of item 2934.99.1Cuja estrutura contém exclusivamente 3 heteroátomos de nitrogênio (azoto) e oxigênio em conjunto, exceto os ácidos nucleicos e seus sais e os produtos compreendidos no item 2934.99.1 Group
  9. 2934.99.22 Zidovudine (AZT)Zidovudina (AZT)
  10. 2934.99.23 ThymidineTimidina
  11. 2934.99.24 FurazolidoneFurazolidona
  12. 2934.99.25 CytarabineCitarabina
  13. 2934.99.26 OxadiazonOxadiazona
  14. 2934.99.27 StavudineEstavudina
  15. 2934.99.29 Other heterocyclics with 3 N/O hetero-atoms onlyOutros
  16. 2934.99.3 Other, containing in the structure exclusively nitrogen and oxygen hetero-atomsOutros, cuja estrutura contém exclusivamente heteroátomos de nitrogênio (azoto) e oxigênio Group
  17. 2934.99.31 KetoconazoleCetoconazol
  18. 2934.99.32 Prazosin hydrochlorideCloridrato de prazosina
  19. 2934.99.33 TalniflumateTalniflumato
  20. 2934.99.34 Nucleic acids and their saltsÁcidos nucleicos e seus sais
  21. 2934.99.35 PropiconazolePropiconazol
  22. 2934.99.39 Other heterocyclics with N and O hetero-atoms onlyOutros
  23. 2934.99.4 Containing in the structure exclusively up to 2 sulphur hetero-atoms or one sulphur and one nitrogen hetero-atomCuja estrutura contém exclusivamente até 2 heteroátomos de enxofre ou um de enxofre e um de nitrogênio (azoto) Group
  24. 2934.99.41 ThiopheneTiofeno
  25. 2934.99.42 6-Aminopenicillanic acidÁcido 6-aminopenicilânico
  26. 2934.99.43 7-Aminocephalosporanic acidÁcido 7-aminocefalosporânico
  27. 2934.99.44 7-Aminodesacetoxycephalosporanic acid (7-ADCA)Ácido 7-aminodesacetoxicefalosporânico
  28. 2934.99.45 ChlormezanoneClormezanona
  29. 2934.99.46 9-(N-Methyl-4-piperidinylidene)thioxanthene9-(N-Metil-4-piperidinilideno)tioxanteno
  30. 2934.99.49 Other heterocyclics, only up to 2 S or 1 S + 1 NOutros
  31. 2934.99.5 Containing in the structure exclusively 3 sulphur and nitrogen hetero-atoms togetherCuja estrutura contém exclusivamente 3 heteroátomos de enxofre e nitrogênio (azoto) em conjunto Group
  32. 2934.99.51 TebuthiuronTebutiuron
  33. 2934.99.52 TetramisoleTetramisol
  34. 2934.99.53 Levamisole and its saltsLevamisol e seus sais
  35. 2934.99.54 TioconazoleTioconazol
  36. 2934.99.59 Other heterocyclics with 3 S/N hetero-atoms onlyOutros
  37. 2934.99.6 Other, containing in the structure exclusively sulphur or sulphur and nitrogen hetero-atomsOutros, cuja estrutura contém exclusivamente heteroátomos de enxofre ou de enxofre e nitrogênio (azoto) Group
  38. 2934.99.61 Tizanidine hydrochlorideCloridrato de tizanidina
  39. 2934.99.69 Other heterocyclics, only S or S+N hetero-atomsOutros
  40. 2934.99.9 OtherOutros Group
  41. 2934.99.91 TimololTimolol
  42. 2934.99.92 Timolol hydrogen maleateMaleato ácido de timolol
  43. 2934.99.93 LamivudineLamivudina
  44. 2934.99.99 Other heterocyclic compounds, not elsewhere listedOutros

All Brazil NCM codes in heading 29.34 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 2934.99

What is HS code 293499?

HS code 293499 is a 6-digit subheading in the Harmonized System that covers: Nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934. This broad "catch-all" category encompasses a wide array of heterocyclic compounds that contain both sulfur and nitrogen atoms in their ring structure, but are not specifically classified elsewhere within heading 2934, and also includes nucleic acids and their salts. This makes it a highly diverse category, covering everything from advanced biochemicals to specialized industrial intermediates. Major importers are countries with strong biotechnology, pharmaceutical, and chemical research and manufacturing sectors, such as the United States, Germany, Japan, and China, which require these compounds for R&D, diagnostics, and production. Exporters are typically global chemical and biochemical suppliers. Key aspects of their trade include the high value and purity requirements for many of these specialized compounds, the rapid pace of innovation in biotechnology, and the need for precise chemical identification to avoid misclassification. The market is driven by advancements in genetic research, drug discovery, and material science.

What products fall under HS code 293499?

DNA, RNA, Adenosine triphosphate (ATP), Guanosine monophosphate (GMP), Cytidine, Uridine, Thioctic acid, Biotin, Lipoic acid

What are common misclassifications for HS code 293499?

This is the ultimate "other" category for 2934, making it prone to confusion with almost any other specific 2934 code if the compound's exact structure isn't clearly defined. It's also distinct from 2933 (nitrogen heterocycles without sulfur) and 2935 (sulfonamides).

Which countries are the top exporters of goods under HS code 293499?

In 2025, the top exporters of HS code 293499 in UN Comtrade data were Ireland ($6.3B, 22% of world exports), China ($4.5B) and Switzerland ($3.5B). World exports came to about $28.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 293499?

In 2025, the top importers of HS code 293499 in UN Comtrade data were the United States ($9.3B, 30% of world imports), Germany ($5.0B) and Austria ($1.7B). World imports came to about $30.9B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 293499 structured?

HS code 293499 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (34) identify the heading, and digits 5-6 (99) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 293499?

Brazil splits HS code 293499 into 37 NCM codes: 2934.99.11 (Morpholine and its salts), 2934.99.12 (Pirenoxine sodium (catalin sodium)), 2934.99.13 (Nimorazole), 2934.99.14 (Isatoic anhydride), 2934.99.15 (4,4'-Dithiodimorpholine), 2934.99.19 (Other oxazine ring compounds without sulphur), 2934.99.22 (Zidovudine (AZT)), 2934.99.23 (Thymidine), and more listed on this page. The first 6 digits of each match the HS code.