Section VI · Organic chemicals
2934.99
Other:
Chapter
Organic chemicals
Heading
The product family within the chapter
Subheading
The specific good, identical worldwide
The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.
How the schedule reaches this code
- 29Organic chemicals
- 2934Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds:
- Other:
- Other:
Published US duty rates
Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.
- 2934.99.01.00Mycophenolate mofetilkg
- General
- Free
- Special (FTA)
- —
- Column 2
- 15.4¢/kg + 45%
No preferential rate published.
Countries without normal trade relations.
- 2934.99.03.002-Acetylbenzo(b)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, p-nitrobenzyl ester, 1-oxide; and Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium saltkg
- General
- Free
- Special (FTA)
- —
- Column 2
- 15.4¢/kg + 52%
No preferential rate published.
Countries without normal trade relations.
- 2934.99.05.005-Amino-3-phenyl-1,2,4-thiadiazole (3-Phenyl-5-amino-1,2,4-thiadiazole); 2-Hydroxybenzoxazole (Benzoxazolone); 4-Phenylmorpholine; 1,9-Thianthrenedicarboxylic acid; and Thioxanthene-9-one (Thioxanthone)kg
- General
- 5.8%
- Special (FTA)
- Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 39.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.06.007-Nitronaphth[1,2]oxadiazole-5-sulfonic acid and its saltskg
- General
- 6.5%
- Special (FTA)
- Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 66.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.07.00Ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]- phenoxy]propanoate (Fenoxaprop-ethyl)kg
- General
- Free
- Special (FTA)
- —
- Column 2
- 15.4¢/kg + 48.5%
No preferential rate published.
Countries without normal trade relations.
- 2934.99.08.002,5-Diphenyloxazolekg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 52%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.09.001,2-Benzisothiazolin-3-onekg
- General
- Free
- Special (FTA)
- —
- Column 2
- 15.4¢/kg + 40.5%
No preferential rate published.
Countries without normal trade relations.
- 2934.99.11.002-tert-Butyl-4-(2,4-dichloro-5- isopropoxyphenyl)-Δ²-1,3,4- oxadiazolin-5-one; 3-Isopropyl-1H-2,1,3- benzothiadiazin-4-(3H)-one-2,2- dioxide (Bentazon); andO,O-Diethyl-S-[(6-chloro-2- oxobenzoxazolin-3-yl)methyl]- phosphorodithioate (Phosalone)kg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 40.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.12.00Fungicideskg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 40%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.15.00Herbicideskg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.25% (JP)
- Column 2
- 15.4¢/kg + 48.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.16.00Insecticideskg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 64.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.18.00Otherkg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 40%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.20.00Photographic chemicalskg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 50%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.30.00Drugskg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 45%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.39.00Products described in additional U.S. note 3 to section VIkg
- General
- 6.5%
- Special (FTA)
- Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 52%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.44.00Otherkg
- General
- 6.5%
- Special (FTA)
- Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 52%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.47Drugs
- General
- 3.7%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 25%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2934.99.70.00Morpholinoethyl chloride hydrochloride; 2-Methyl-2,5-dioxo-1-oxa-2-phospholan; and (6R-trans)-7-Amino-3-methyl-8-oxo-5- thia-1-azabicyclo[4.2.0]-oct-2-ene-2- carboxylic acidkg
- General
- Free
- Special (FTA)
- —
- Column 2
- 30.5%
No preferential rate published.
Countries without normal trade relations.
- 2934.99.90.01Otherkg
- General
- 6.5%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 30.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.
Other subheadings in heading 2934
- 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:
- 2934.91Aminorex (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 fentanyls and their derivatives
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.