HS code 2934.99: Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
Last updated
Key facts
- HS code
- 2934.99
- Covers
- Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
- Chapter
- 29: Organic chemicals
- Edition
- HS2022
- Duty in the United States
- See its 22 lines
Summary
HS code 2934.99 covers nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, other than those classified in 2934.91 and 2934.92. It sits in heading 29.34 (nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds) in chapter 29 (organic chemicals). Other goods of heading 29.34 are classified under 2934.10 (compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure), 2934.20 (compounds containing in the structure a benzothiazole ring- system (whether or not hydrogenated), not further fused), 2934.30 (compounds containing in the structure a phenothiazine ring- system (whether or not hydrogenated), not further fused), 2934.91 (other, aminorex (INN), brotizolam (INN), clotiazepam (INN), cloxazolam (INN), dextromoramide (INN), haloxazolam (INN), ketazolam (INN), mesocarb (INN), oxazolam (INN), pemoline (INN), phendimetrazine (INN), phenmetrazine (INN) or sufentanil (INN); salts thereof) and 1 other. National tariff lines under 2934.99 are live on border.bot for the United States (22 lines, also used by 1 other country).
What this code covers
HS code 2934.99 covers nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, other than those classified in 2934.91 and 2934.92.
The legal text of the subheading is “Other: Other”, read under “Other”, in HS2022.
What it doesn’t cover
Other goods of heading 29.34 are classified under 2934.10 (compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure), 2934.20 (compounds containing in the structure a benzothiazole ring- system (whether or not hydrogenated), not further fused), 2934.30 (compounds containing in the structure a phenothiazine ring- system (whether or not hydrogenated), not further fused), 2934.91 (other, aminorex (INN), brotizolam (INN), clotiazepam (INN), cloxazolam (INN), dextromoramide (INN), haloxazolam (INN), ketazolam (INN), mesocarb (INN), oxazolam (INN), pemoline (INN), phendimetrazine (INN), phenmetrazine (INN) or sufentanil (INN); salts thereof) and 1 other.
- 2934.10Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure
- 2934.20Compounds containing in the structure a benzothiazole ring- system (whether or not hydrogenated), not further fused
- 2934.30Compounds containing in the structure a phenothiazine ring- system (whether or not hydrogenated), not further fused
- 2934.91Other: Aminorex (INN), brotizolam (INN), clotiazepam (INN), cloxazolam (INN), dextromoramide (INN), haloxazolam (INN), ketazolam (INN), mesocarb (INN), oxazolam (INN), pemoline (INN), phendimetrazine (INN), phenmetrazine (INN) and sufentanil (INN); salts thereof
- 2934.92Other: Other fentanyls and their derivatives
How it is structured
2934.99 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2934, are heading 29.34; the last two, 99, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Chapter 29
- Organic chemicals
- Heading 29.34
- Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
- Within the heading
- Other
- Subheading 2934.99
- Other
In other countries
National tariff lines under 2934.99 are live on border.bot for the United States (22 lines, also used by 1 other country).
- United States22 lines, used by 1 other country
Frequently asked questions
What does HS code 2934.99 cover?
HS code 2934.99 covers nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, other than those classified in 2934.91 and 2934.92.
Which heading and chapter is HS code 2934.99 in?
HS code 2934.99 is in heading 29.34 (nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds) in chapter 29 (organic chemicals).
Where are goods of heading 29.34 classified when 2934.99 doesn’t fit?
Other goods of heading 29.34 are classified under 2934.10 (compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure), 2934.20 (compounds containing in the structure a benzothiazole ring- system (whether or not hydrogenated), not further fused), 2934.30 (compounds containing in the structure a phenothiazine ring- system (whether or not hydrogenated), not further fused), 2934.91 (other, aminorex (INN), brotizolam (INN), clotiazepam (INN), cloxazolam (INN), dextromoramide (INN), haloxazolam (INN), ketazolam (INN), mesocarb (INN), oxazolam (INN), pemoline (INN), phendimetrazine (INN), phenmetrazine (INN) or sufentanil (INN); salts thereof) and 1 other.
Which countries’ tariffs list national lines under HS code 2934.99?
National tariff lines under 2934.99 are live on border.bot for the United States (22 lines, also used by 1 other country).
Sources and updates
The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.
This page was last updated on 11 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.