HS Heading 2934 : Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
HEADING DEFINITION & DISAMBIGUATION
HS Heading 2934 encompasses nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. It classifies 6 6-digit WCO subheadings within Chapter 29 under the Harmonized System [USITC HTS 2026].
Subheadings Under Heading 2934
| HS Code | WCO 6-Digit Subheading Description | Chapter | Operational Package |
|---|---|---|---|
| 2934.10 | Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure | 29 | View 2934.10 Package → |
| 2934.20 | Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused | 29 | View 2934.20 Package → |
| 2934.30 | Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused | 29 | View 2934.30 Package → |
| 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) and sufentanil (INN); salts thereof | 29 | View 2934.91 Package → |
| 2934.92 | Other, Other fentanyls and their derivatives | 29 | View 2934.92 Package → |
| 2934.99 | Other, Other | 29 | View 2934.99 Package → |
DISAMBIGUATION & CLASSIFICATION GUIDE
How to Select the Correct Subheading Under Heading 2934
Commercial shipments must be declared under the exact 6-digit WCO subheading that matches physical, chemical, or processing characteristics. Review the subheading descriptions above and verify against binding CBP CROSS rulings prior to entry filing.
Official Primary Sources & Authority References
USITC HTS Heading 2934 ↗
United States International Trade Commission official Harmonized Tariff Schedule.
CBP CROSS Rulings ↗
CBP e-Rulings database for Heading 2934 precedent rulings.
WCO Nomenclature ↗
World Customs Organization Harmonized System 2022 nomenclature standard.
U.S. Census Foreign Trade ↗
U.S. Census Bureau HTS-to-NAICS concordance and Schedule B export database.
Heading 2934 Frequently Asked Questions (FAQ)
What commercial articles are grouped under HS Heading 2934?
HS Heading 2934 covers Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, grouping 6 6-digit WCO subheadings.
How are 6-digit subheadings structured under Heading 2934?
Subheadings under Heading 2934 range from 2934.11 to 2934.90, classifying goods by processing state, origin, or material composition.
What is the representative US import duty rate for Heading 2934?
US MFN general duty rates for Heading 2934 commodities range from Duty-Free up to representative ad valorem percentages under the 2026 US HTS.
Are Section 301 tariffs applicable to goods under Heading 2934?
Section 301 additional tariffs depend on the specific 8-digit or 10-digit US HTS code and country of origin (e.g. China Lists 1–4A).
What PGA message set flags apply to Heading 2934?
Partner Government Agency flags (FDA, USDA APHIS, EPA) apply depending on the specific commodity sub-classification.
How do I distinguish between subheadings under Heading 2934?
Review WCO subheading terms and candidate descriptions. For example, unroasted vs. roasted or decaffeinated vs. non-decaffeinated.
Can goods under Heading 2934 enter duty-free under USMCA?
Yes. Goods originating in USMCA territories (US, Mexico, Canada) enter duty-free under SPI code P with a valid Certificate of Origin.
What is the Section 321 de minimis limit for Heading 2934?
Eligible import shipments valued at $800 USD or less imported by one person on one day enter duty-free under 19 U.S.C. 1321.
What documents are required for formal customs entry of Heading 2934?
Commercial Invoice, Packing List, Bill of Lading, and CBP Form 7501 are mandatory for entries exceeding $2,500 USD.
How can an importer get a binding CBP classification ruling for Heading 2934?
Importers may apply for a binding ruling via CBP National Commodity Specialist Division under 19 CFR Part 177.