Product classification

HS code for Amobarbital: 2933.53

Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN), salts thereof.

Classification of amobarbital under HS 2933.53

Amobarbital is classified under HS code 2933.53, which is situated within Chapter 29 of the Harmonized System, covering organic chemicals. Specifically, this code falls under Heading 2933, which encompasses heterocyclic compounds with nitrogen hetero-atom(s) only. The classification is determined by the chemical structure of the substance, which is a derivative of malonylurea (barbituric acid). According to the General Rules of Interpretation (GRI) 1 and 6, the product is classified based on its chemical identity as a barbiturate. Amobarbital (INN) is explicitly listed in the subheading 2933.53 alongside other barbiturates like phenobarbital and secobarbital. This classification applies to the chemical in its pure form or as a salt. It is essential to distinguish between the bulk chemical and finished pharmaceutical products; while the bulk substance remains in Chapter 29, preparations for therapeutic use would move to Chapter 30. The inclusion in 2933.53 is mandatory for international trade documentation to ensure compliance with both customs regulations and international drug control treaties, as these substances are often subject to strict monitoring.

Covers
  • Amobarbital (INN)
  • Amobarbital sodium
  • Salts of amobarbital
  • Bulk amobarbital powder for pharmaceutical manufacturing
Also under 2933.53
  • Pfizer
  • Teva Pharmaceuticals
  • Sandoz (Novartis)
  • Hikma Pharmaceuticals
  • Mylan (now Viatris)

Codes often confused with 2933.53

Common mistake. Amobarbital is frequently misclassified under HS code 3004.49, which covers medicaments consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses or for retail sale. The distinction lies in the packaging and intended use; if the amobarbital is in bulk form, it must remain in 2933.53. Another common error is using 2933.52, which covers malonylurea (barbituric acid) and its derivatives, but 2933.53 is the more specific code for the named barbiturates listed in the HS nomenclature.

3004.49Medicaments; containing alkaloids or their derivatives; other than ephedrine, pseudoephedrine (INN) or norephedrine or their salts; for therapeutic or prophylactic uses, packaged for retail sale2933.52Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, malonylurea (barbituric acid) and its salts

Top exporters and importers of HS 293353 (the code used for amobarbital), 2025

In 2025, the largest exporter of HS 293353 (the code used for amobarbital) in UN Comtrade data was Germany, with 27% of world exports; the largest importer in UN Comtrade data was the United States, with 18% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 293353, not only amobarbital.

Top exporters 2025 · share of world exports

  1. 1 Germany $9.0M
  2. 2 Ireland $5.9M
  3. 3 China $5.8M

World total: $34M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $5.6M
  2. 2 Netherlands $4.6M
  3. 3 Germany $3.2M

World total: $31M 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 amobarbital

Brazil splits HS 2933.53 into 12 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about amobarbital

What is the HS code for Amobarbital?

The HS code for Amobarbital is 293353 (Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof). The HS code for Amobarbital is 2933.53.

How do I classify Amobarbital for customs?

Amobarbital is classified under HS code 293353 — Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof. This is a 6-digit subheading level code.

Is Amobarbital considered a controlled substance for shipping?

Yes, as a barbiturate, it is regulated under the Convention on Psychotropic Substances, and additional import/export permits are usually required alongside the HS classification.

Which countries are the top exporters of amobarbital (HS 293353)?

In 2025, the top exporters of HS 293353 (the code used for amobarbital) in UN Comtrade data were Germany ($9.0M, 27% of world exports), Ireland ($5.9M) and China ($5.8M). World exports came to about $34M, 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 amobarbital (HS 293353)?

In 2025, the top importers of HS 293353 (the code used for amobarbital) in UN Comtrade data were the United States ($5.6M, 18% of world imports), the Netherlands ($4.6M) and Germany ($3.2M). World imports came to about $31M, 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.

Is the HS code for Amobarbital the same in all countries?

The base HS code 293353 for Amobarbital is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for amobarbital in Brazil?

Brazil splits HS 293353 into 12 NCM codes, so the right one for amobarbital depends on the product's details: 2933.53.11 (Allobarbital and its salts), 2933.53.12 (Amobarbital and its salts), 2933.53.21 (Barbital and its salts), 2933.53.22 (Butalbital and its salts), 2933.53.23 (Butobarbital and its salts), 2933.53.30 (Cyclobarbital and its salts), and more.