HS code · 6-digit subheading

HS Code 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

HS code 2933.53 is the 6-digit subheading for 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. It is used for phenobarbital, pentobarbital, amobarbital, secobarbital and butalbital.

What HS 2933.53 covers

This specific HS code covers a defined list of barbiturates, including Allobarbital, Amobarbital, Phenobarbital, Pentobarbital, and their salts. These compounds are potent central nervous system depressants, historically used as sedatives, hypnotics, and anticonvulsants in medicine. Their trade is highly regulated globally due to their potential for abuse and dependence, falling under international drug control conventions. Key players are pharmaceutical manufacturers and distributors, operating under stringent national and international drug control laws. Purity, pharmaceutical grade, and compliance with pharmacopoeia standards are paramount for these controlled substances.

Covers
  • Phenobarbital
  • Pentobarbital
  • Amobarbital
  • Secobarbital
  • Butalbital
  • Barbital
  • Cyclobarbital
Examples
  • Pfizer
  • Teva Pharmaceuticals
  • Sandoz (Novartis)
  • Hikma Pharmaceuticals
  • Mylan (now Viatris)

Codes often confused with 2933.53

Common mistake. These are often confused with other controlled substances (e.g., other psychotropic substances in 2933.99) or even formulated pharmaceutical products (Chapter 30) if they are in dosage form.

2933.99Heterocyclic compounds; n.e.c. in headings no. 2933

Top exporters and importers of HS code 293353, 2025

In 2025, the largest exporter of HS code 293353 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.

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 2933.53 12

Brazil splits HS 2933.53 into 12 NCM codes, Mercosur's 8-digit tariff lines.

  1. 2933.53.1 Allobarbital and amobarbital; salts thereofAlobarbital e amobarbital; sais destes produtos Group
  2. 2933.53.11 Allobarbital and its saltsAlobarbital e seus sais
  3. 2933.53.12 Amobarbital and its saltsAmobarbital e seus sais
  4. 2933.53.2 Barbital, butalbital and butobarbital; salts thereofBarbital, butalbital e butobarbital; sais destes produtos Group
  5. 2933.53.21 Barbital and its saltsBarbital e seus sais
  6. 2933.53.22 Butalbital and its saltsButalbital e seus sais
  7. 2933.53.23 Butobarbital and its saltsButobarbital e seus sais
  8. 2933.53.30 Cyclobarbital and its saltsCiclobarbital e seus sais
  9. 2933.53.40 Phenobarbital and its saltsFenobarbital e seus sais
  10. 2933.53.50 Methylphenobarbital and its saltsMetilfenobarbital e seus sais
  11. 2933.53.60 Pentobarbital and its saltsPentobarbital e seus sais
  12. 2933.53.7 Secbutabarbital and secobarbital; salts thereofSecbutabarbital e secobarbital; sais destes produtos Group
  13. 2933.53.71 Secbutabarbital and its saltsSecbutabarbital e seus sais
  14. 2933.53.72 Secobarbital and its saltsSecobarbital e seus sais
  15. 2933.53.80 Vinylbital and its saltsVenilbital e seus sais

All Brazil NCM codes in heading 29.33 →

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

Questions about HS 2933.53

What is HS code 293353?

HS code 293353 is a 6-digit subheading in the Harmonized System that covers: 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 specific HS code covers a defined list of barbiturates, including Allobarbital, Amobarbital, Phenobarbital, Pentobarbital, and their salts. These compounds are potent central nervous system depressants, historically used as sedatives, hypnotics, and anticonvulsants in medicine. Their trade is highly regulated globally due to their potential for abuse and dependence, falling under international drug control conventions. Key players are pharmaceutical manufacturers and distributors, operating under stringent national and international drug control laws. Purity, pharmaceutical grade, and compliance with pharmacopoeia standards are paramount for these controlled substances.

What products fall under HS code 293353?

Phenobarbital, Pentobarbital, Amobarbital, Secobarbital, Butalbital, Barbital, Cyclobarbital

What are common misclassifications for HS code 293353?

These are often confused with other controlled substances (e.g., other psychotropic substances in 2933.99) or even formulated pharmaceutical products (Chapter 30) if they are in dosage form.

Which countries are the top exporters of goods under HS code 293353?

In 2025, the top exporters of HS code 293353 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 goods under HS code 293353?

In 2025, the top importers of HS code 293353 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.

How is HS code 293353 structured?

HS code 293353 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (33) identify the heading, and digits 5-6 (53) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 293353?

Brazil splits HS code 293353 into 12 NCM codes: 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), 2933.53.40 (Phenobarbital and its salts), 2933.53.50 (Methylphenobarbital and its salts), and more listed on this page. The first 6 digits of each match the HS code.