Chapter 29 · Organic chemicals · Section 6
HS Code 2933.79
Other lactams
Heading 2933: Heterocyclic compounds with nitrogen hetero-atom(s) only
US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources
United States - HTS lines under 2933.79
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 2933.79.04 |
Other lactams > Aromatic or modified aromatic > 2,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione |
Free | - | 15.4¢/kg + 52% | kg |
| 2933.79.08 |
Aromatic or modified aromatic > Other > Products described in additional U.S. note 3 to section VI |
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% | kg |
| 2933.79.15 |
Aromatic or modified aromatic > Other > Other |
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% | kg |
| 2933.79.20 |
Other lactams > Other > N-Methyl-2-pyrrolidone; and 2-Pyrrolidone |
4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 2933.79.30 |
Other lactams > Other > N-Vinyl-2-pyrrolidone, monomer |
5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | kg |
| 2933.79.40 |
Other lactams > Other > 12-Aminododecanoic acid lactam |
Free | - | 30.5% | kg |
| 2933.79.85 |
Other lactams > Other > Other |
6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG) | 30.5% | kg |
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Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 2933.79
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 2933 79 00 | Other lactams | EU duty (TARIC) → |
United Kingdom - commodity codes under 2933.79
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 2933 79 00 00 | Other lactams | UK duty & VAT → |
| 2933 79 00 15 | Ethyl N-(tert-Butoxycarbonyl)-L-pyroglutamate (CAS RN 144978-12-1) | UK duty & VAT → |
| 2933 79 00 23 | (S)-2-Amino-3-[(S)-2-oxopyrrolidin-3-yl]propanamide hydrochloride (CAS RN 2628280-48-6) with a purity by weight of 95 % or more | UK duty & VAT → |
| 2933 79 00 25 | Methyl 2-oxo-2,3-dihydro-1H-indole-6-carboxylate (CAS RN 14192-26-8) | UK duty & VAT → |
| 2933 79 00 30 | 5-Vinyl-2-pyrrolidone (CAS RN 7529-16-0) | UK duty & VAT → |
| 2933 79 00 45 | 1-phenyl-3H-indol-2-one (CAS RN 3335-98-6) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2933 79 00 55 | (3S,4R)-3-Amino-4-hydroxypyrrolidin-2-one hydrochloride (CAS RN 2446872-13-3) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2933 79 00 65 | 1-Dodecyl-2-pyrrolidone (CAS RN 2687-96-9) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2933 79 00 75 | N-(n-octyl)-2-pyrrolidone (CAS RN 2687-94-7) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2933 79 00 85 | 3,5-Dibromo-1-methyl-2(1H)-pyridinone (CAS RN 14529-54-5) with a purity by weight of 97 % or more | UK duty & VAT → |
| 2933 79 00 90 | Other | UK duty & VAT → |
Other subheadings in 2933
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.