# HS code 2924.21: Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof > HS code 2924.21 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. It sits in heading 29.24 (carboxyamide-function compounds; amide-function compounds of carbonic acid) in chapter 29 (organic chemicals). Other goods of heading 29.24 are classified under 2924.11 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, meprobamate (INN)), 2924.12 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO)), 2924.19 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, other), 2924.23 (cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, 2-Acetamidobenzoic acid (N-acetylanthranilic acid) or its salts) and 3 others. Source: https://staging.border.bot/hs-codes/292421 Last updated: 13 October 2026 [HS codes](https://staging.border.bot/hs-codes) / [Chapter 29](https://staging.border.bot/hs-codes/29) / [29.24](https://staging.border.bot/hs-codes/2924) / [2924.21](https://staging.border.bot/hs-codes/292421) ## Key facts - HS code: 2924.21 - Covers: Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof - Heading: [29.24: Carboxyamide-function compounds; amide-function compounds of carbonic acid](https://staging.border.bot/hs-codes/2924) - Chapter: [29: Organic chemicals](https://staging.border.bot/hs-codes/29) - Edition: HS2022 - Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries) ## What this code covers HS code 2924.21 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. The legal text of the subheading is “Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: Ureines and their derivatives; salts thereof”, read under “Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof”, in HS2022. ## What it doesn’t cover Other goods of heading 29.24 are classified under 2924.11 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, meprobamate (INN)), 2924.12 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO)), 2924.19 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, other), 2924.23 (cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, 2-Acetamidobenzoic acid (N-acetylanthranilic acid) or its salts) and 3 others. - [2924.11](https://staging.border.bot/hs-codes/292411) Acyclic amides (including acyclic carbamates) and their derivatives; salts thereof: Meprobamate (INN) - [2924.12](https://staging.border.bot/hs-codes/292412) Acyclic amides (including acyclic carbamates) and their derivatives; salts thereof: Fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO) - [2924.19](https://staging.border.bot/hs-codes/292419) Acyclic amides (including acyclic carbamates) and their derivatives; salts thereof: Other - [2924.23](https://staging.border.bot/hs-codes/292423) Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: 2-Acetamidobenzoic acid (N-acetylanthranilic acid) and its salts - [2924.24](https://staging.border.bot/hs-codes/292424) Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: Ethinamate (INN) - [2924.25](https://staging.border.bot/hs-codes/292425) Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: Alachlor (ISO) - [2924.29](https://staging.border.bot/hs-codes/292429) Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: Other ## How it is structured 2924.21 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2924, are heading 29.24; the last two, 21, identify the subheading within the heading. Countries add their own digits after these six for their national tariff lines. - Chapter 29: Organic chemicals - Heading 29.24: Carboxyamide-function compounds; amide-function compounds of carbonic acid - Within the heading: Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof - Subheading 2924.21: Ureines and their derivatives; salts thereof ## In other countries No national tariff lines under 2924.21 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2924.21 at six digits and add their own digits after it. - Previous subheading: [2924.19](https://staging.border.bot/hs-codes/292419) Acyclic amides (including acyclic carbamates) and their derivatives; salts thereof: Other - Next subheading: [2924.23](https://staging.border.bot/hs-codes/292423) Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: 2-Acetamidobenzoic acid (N-acetylanthranilic acid) and its salts ## Frequently asked questions ### What does HS code 2924.21 cover? HS code 2924.21 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. ### Which heading and chapter is HS code 2924.21 in? HS code 2924.21 is in heading 29.24 (carboxyamide-function compounds; amide-function compounds of carbonic acid) in chapter 29 (organic chemicals). ### Where are goods of heading 29.24 classified when 2924.21 doesn’t fit? Other goods of heading 29.24 are classified under 2924.11 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, meprobamate (INN)), 2924.12 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO)), 2924.19 (acyclic amides (including acyclic carbamates) and their derivatives; salts thereof, other), 2924.23 (cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, 2-Acetamidobenzoic acid (N-acetylanthranilic acid) or its salts) and 3 others. ## Sources and updates The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026. This page was last updated on 13 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Machine-readable: https://staging.border.bot/hs-codes/292421.json