HS code · 6-digit subheading
HS Code 2924.21 – Cyclic amides (including cyclic carbamates) and their derivatives, ureines and their derivatives; salts thereof
HS code 2924.21 is the 6-digit subheading for cyclic amides (including cyclic carbamates) and their derivatives, ureines and their derivatives, salts thereof. It is used for caprolactam, pyrrolidone, N-Vinylpyrrolidone, hydantoin and barbituric acid.
What HS 2924.21 covers
This HS code encompasses cyclic amides, including cyclic carbamates, and their derivatives, along with ureines and their derivatives. This broad category includes a wide range of compounds with diverse applications. Many are crucial intermediates in the pharmaceutical industry for synthesizing active pharmaceutical ingredients (APIs), while others are used in agrochemicals, polymer production, and as specialty chemicals. Examples include lactams, cyclic ureas, and various heterocyclic compounds containing an amide linkage. Major importers are pharmaceutical manufacturers, agrochemical companies, and polymer producers seeking specific building blocks for their products. Exporters are typically specialized chemical synthesis companies and large chemical manufacturers. Key aspects of trade involve ensuring high purity for sensitive applications, navigating intellectual property rights for novel compounds, and complying with stringent regulatory standards, especially for pharmaceutical and agrochemical uses. The market is driven by innovation in drug discovery and material science.
- Covers
- Caprolactam
- Pyrrolidone
- N-Vinylpyrrolidone
- Hydantoin
- Barbituric acid
- Succinimide
- Imidazolidinone
- Examples
- BASF Caprolactam
- Ashland N-Vinylpyrrolidone
- Sigma-Aldrich Hydantoin
- Evonik Imidazolidinone
Codes often confused with 2924.21
Common mistake. This code can be confused with other nitrogen-containing heterocyclic compounds in Chapter 29 (e.g., 2933 for other heterocyclics) if the specific amide or ureine structure is not clearly identified, or with polymers derived from these monomers in Chapter 39 (e.g., 3908 for polyamides).
Top exporters and importers of HS code 292421, 2025
In 2025, the largest exporter of HS code 292421 in UN Comtrade data was Germany, with 31% of world exports; the largest importer in UN Comtrade data was Brazil, with 24% 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 Germany $60M 31% of world exports
- 2 India $41M 21% of world exports
- 3 Israel $22M 11% of world exports
World total: $193M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Brazil $56M 24% of world imports
- 2 United States $27M 12% of world imports
- 3 India $21M 9.2% of world imports
World total: $233M 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 2924.21 4
Brazil splits HS 2924.21 into 4 NCM codes, Mercosur's 8-digit tariff lines.
- 2924.21.1 Carbanilide and its derivatives; salts thereofCarbanilida e seus derivados; sais destes produtos Group
- 2924.21.11 HexanitrocarbanilidesHexanitrocarbanilidas
- 2924.21.19 Carbanilide, other derivatives and saltsOutros
- 2924.21.20 DiuronDiuron
- 2924.21.90 Other ureines and their derivatives; saltsOutros
All Brazil NCM codes in heading 29.24 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2924.21
What is HS code 292421?
HS code 292421 is a 6-digit subheading in the Harmonized System that covers: Cyclic amides (including cyclic carbamates) and their derivatives, ureines and their derivatives; salts thereof. This HS code encompasses cyclic amides, including cyclic carbamates, and their derivatives, along with ureines and their derivatives. This broad category includes a wide range of compounds with diverse applications. Many are crucial intermediates in the pharmaceutical industry for synthesizing active pharmaceutical ingredients (APIs), while others are used in agrochemicals, polymer production, and as specialty chemicals. Examples include lactams, cyclic ureas, and various heterocyclic compounds containing an amide linkage. Major importers are pharmaceutical manufacturers, agrochemical companies, and polymer producers seeking specific building blocks for their products. Exporters are typically specialized chemical synthesis companies and large chemical manufacturers. Key aspects of trade involve ensuring high purity for sensitive applications, navigating intellectual property rights for novel compounds, and complying with stringent regulatory standards, especially for pharmaceutical and agrochemical uses. The market is driven by innovation in drug discovery and material science.
What products fall under HS code 292421?
Caprolactam, Pyrrolidone, N-Vinylpyrrolidone, Hydantoin, Barbituric acid, Succinimide, Imidazolidinone
What are common misclassifications for HS code 292421?
This code can be confused with other nitrogen-containing heterocyclic compounds in Chapter 29 (e.g., 2933 for other heterocyclics) if the specific amide or ureine structure is not clearly identified, or with polymers derived from these monomers in Chapter 39 (e.g., 3908 for polyamides).
Which countries are the top exporters of goods under HS code 292421?
In 2025, the top exporters of HS code 292421 in UN Comtrade data were Germany ($60M, 31% of world exports), India ($41M) and Israel ($22M). World exports came to about $193M, 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 292421?
In 2025, the top importers of HS code 292421 in UN Comtrade data were Brazil ($56M, 24% of world imports), the United States ($27M) and India ($21M). World imports came to about $233M, 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 292421 structured?
HS code 292421 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (24) identify the heading, and digits 5-6 (21) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292421?
Brazil splits HS code 292421 into 4 NCM codes: 2924.21.11 (Hexanitrocarbanilides), 2924.21.19 (Carbanilide, other derivatives and salts), 2924.21.20 (Diuron), 2924.21.90 (Other ureines and their derivatives; salts). The first 6 digits of each match the HS code.