Product classification
HS code for Clobazam: 2933.72
Heterocyclic compounds, lactams, clobazam (INN) and methyprylon (INN).
Classification of clobazam under HS 2933.72
Clobazam is classified under HS code 2933.72. This classification falls within Chapter 29, which covers organic chemicals, and specifically heading 2933, which encompasses heterocyclic compounds with nitrogen hetero-atom(s) only. Clobazam is a 1,5-benzodiazepine, but for the purposes of the Harmonized System, it is categorized under the subheading for lactams. A lactam is a cyclic amide, and the structure of clobazam includes this functional group within its seven-membered ring. The classification 2933.72 is a specific 'named' subheading that also includes methyprylon. This level of specificity is used because clobazam is a psychotropic substance subject to international control under the 1971 Convention on Psychotropic Substances. Accurate classification is vital for regulatory monitoring by the International Narcotics Control Board (INCB). This code applies to the pure chemical substance (the raw material) or its salts. If the clobazam has been formulated into a finished dosage form, such as a tablet for retail sale, the classification would change to Chapter 30.
- Covers
- Clobazam (INN) in pure form
- Salts of clobazam
- Clobazam powder for pharmaceutical manufacturing
- Technical grade clobazam for laboratory use
- Also under 2933.72
- Onfi (Clobazam)
- Frisium (Clobazam)
- Noludar (Methyprylon - historical)
Codes often confused with 2933.72
Common mistake. Clobazam is frequently misclassified under HS code 2933.91, which covers other benzodiazepines like diazepam, lorazepam, and alprazolam. While clobazam is a benzodiazepine, the HS nomenclature provides a specific subheading (2933.72) for it because of its lactam structure, which takes precedence over the general benzodiazepine subheading. Another common error is classifying it under 3004.90. This occurs when the importer confuses the bulk chemical with the finished medicament. HS code 3004 is only for products put up in measured doses or for retail sale.
Top exporters and importers of HS 293372 (the code used for clobazam), 2025
In 2025, the largest exporter of HS 293372 (the code used for clobazam) in UN Comtrade data was France, with 52% of world exports; the largest importer in UN Comtrade data was Brazil, with 26% 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 293372, not only clobazam.
Top exporters 2025 · share of world exports
- 1 France $10M 52% of world exports
- 2 Germany $6.9M 35% of world exports
- 3 India $2.3M 12% of world exports
World total: $20M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Brazil $3.8M 26% of world imports
- 2 India $3.4M 23% of world imports
- 3 Canada $1.5M 10% of world imports
World total: $15M 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 clobazam
Brazil splits HS 2933.72 into 2 NCM codes. Pick the one that matches your product:
- 2933.72.10Clobazam
- 2933.72.20Methyprylon
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about clobazam
What is the HS code for Clobazam?
The HS code for Clobazam is 293372 (Heterocyclic compounds; lactams; clobazam (INN) and methyprylon (INN)). The HS code for the pure chemical substance clobazam and its salts is 2933.72.
How do I classify Clobazam for customs?
Clobazam is classified under HS code 293372 — Heterocyclic compounds; lactams; clobazam (INN) and methyprylon (INN). This is a 6-digit subheading level code.
Is clobazam classified differently if it is in tablet form?
Yes, if clobazam is formulated into tablets, capsules, or other measured doses for therapeutic use, it is classified under HS code 3004.90 as a medicament.
Which countries are the top exporters of clobazam (HS 293372)?
In 2025, the top exporters of HS 293372 (the code used for clobazam) in UN Comtrade data were France ($10M, 52% of world exports), Germany ($6.9M) and India ($2.3M). World exports came to about $20M, 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 clobazam (HS 293372)?
In 2025, the top importers of HS 293372 (the code used for clobazam) in UN Comtrade data were Brazil ($3.8M, 26% of world imports), India ($3.4M) and Canada ($1.5M). World imports came to about $15M, 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 Clobazam the same in all countries?
The base HS code 293372 for Clobazam 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 clobazam in Brazil?
Brazil splits HS 293372 into 2 NCM codes, so the right one for clobazam depends on the product's details: 2933.72.10 (Clobazam), 2933.72.20 (Methyprylon).