Chapter 29: Organic chemicals
HTS heading 2934: Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
49 numbered lines under heading 2934, including 43 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 2934 | Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: | ||||
| 2934.10 | Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure: | ||||
| Aromatic or modified aromatic: | |||||
| 2934.10.10.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) 3.25% (JP) | 15.4¢/kg + 52% |
| 2934.10.20.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 52% |
| Other: | |||||
| 2934.10.70.00 | 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one; Ethyl 2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetate; Ethyl 2-(2-aminothiazol-4-yl)-2- methoxyiminoacetate; 2-Methyl-4-isothiazolin- 3-one; 2-n-Octyl-4-isothiazolin-3-one; and Thiothiamine hydrochloride | kg | Free | 30.5% | |
| 2934.10.90.00 | Other | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG) 3.25% (JP) | 30.5% |
| 2934.20 | Compounds containing in the structure a benzothiazole ring-system (whether or not hydrogenated), not further fused: | ||||
| 2934.20.05.00 | N-tert-Butyl-2-benzothiazolesulfenamide | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.20.10.00 | 2,2'-Dithiobisbenzothiazole | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 57% |
| 2934.20.15.00 | 2-Mercaptobenzothiazole; andN-(Oxydiethylene)benzothiazole-2-sulfenamide | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.20.20.00 | 2-Mercaptobenzothiazole, sodium salt (2-Benzothiazolethiol, sodium salt) | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 40% |
| 2934.20.25.00 | 2-Amino-5,6-dichloro benzo thiazole; 2-(4-Amino phenyl)-6-methyl benzo thiazole-7- sulfonic acid; 2-Amino-6-nitro benzo thiazole; andN,N-Di cyclo hexyl-2-benzo thiazole sulfenamide | kg | Free | 15.4¢/kg + 52% | |
| 2934.20.30.00 | 2-Amino-6-methoxy benzo thiazole; 2-Amino-6-methyl benzo thiazole; 6-Ethoxy-2-benzo thiazo lethiol; 3-Methyl benzo thiazole-2-hydrazone; and Primuline base | kg | 5.8% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,KR, L,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 39.5% |
| Other: | |||||
| 2934.20.35.00 | Pesticides | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40% |
| Other: | |||||
| 2934.20.40.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.20.80.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.30 | Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused: | ||||
| 2934.30.12.00 | 2-(Trifluoromethyl)phenothiazine | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 45% |
| 2934.30.18.00 | Ethyl (1H-phenothiazin-2,4,1)carbamate | kg | Free | 15.4¢/kg + 52% | |
| Other: | |||||
| Drugs: | |||||
| 2934.30.23.00 | Antidepressants, tranquilizers and other psychotherapeutic agents | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 149.5% |
| 2934.30.27.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 45% |
| Other: | |||||
| 2934.30.43.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.30.50.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 52% |
| Other: | |||||
| 2934.91.00.00 | 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 | kg | Free | 15.4¢/kg + 52% | |
| 2934.92.00.00 | Other fentanyls and their derivatives | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 30.5% |
| 2934.99 | Other: | ||||
| Aromatic or modified aromatic: | |||||
| 2934.99.01.00 | Mycophenolate mofetil | kg | Free | 15.4¢/kg + 45% | |
| 2934.99.03.00 | 2-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 salt | kg | Free | 15.4¢/kg + 52% | |
| 2934.99.05.00 | 5-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 | 5.8% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 39.5% |
| 2934.99.06.00 | 7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid and its salts | kg | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 66.5% |
| 2934.99.07.00 | Ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]- phenoxy]propanoate (Fenoxaprop-ethyl) | kg | Free | 15.4¢/kg + 48.5% | |
| 2934.99.08.00 | 2,5-Diphenyloxazole | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.99.09.00 | 1,2-Benzisothiazolin-3-one | kg | Free | 15.4¢/kg + 40.5% | |
| Other: | |||||
| Pesticides: | |||||
| 2934.99.11.00 | 2-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 | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40.5% |
| Other: | |||||
| 2934.99.12.00 | Fungicides | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40% |
| 2934.99.15.00 | Herbicides | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.25% (JP) | 15.4¢/kg + 48.5% |
| 2934.99.16.00 | Insecticides | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 64.5% |
| 2934.99.18.00 | Other | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40% |
| 2934.99.20.00 | Photographic chemicals | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 50% |
| 2934.99.30.00 | Drugs | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 45% |
| Other: | |||||
| 2934.99.39.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 52% |
| 2934.99.44.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 52% |
| Other: | |||||
| 2934.99.47 | Drugs | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2934.99.47.20 | Rocuronium (INN) and its salts | kg | |||
| 2934.99.47.30 | Tacrolimus (INN) and its salts | kg | |||
| 2934.99.47.40 | Timolol maleate and its salts | kg | |||
| 2934.99.47.90 | Other | kg | |||
| Other: | |||||
| 2934.99.70.00 | Morpholinoethyl 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 acid | kg | Free | 30.5% | |
| 2934.99.90.01 | Other | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 30.5% |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
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Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.