Products described in additional U.S. note 3 to section VI
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Aromatic or modified aromatic: > Other: > Products described in additional U.S. note 3 to section VI
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2933.79.08.00
6-Acetamidohexanoic Acid
6-Acetamidohexanoic acid is an aromatic-modified lactam derivative used as a chemical intermediate in pharmaceutical synthesis. It falls under HTS 2933.79.08.00 as a heterocyclic compound with nitrogen hetero-atom in lactam form, specifically listed in additional U.S. note 3 to section VI for certain regulated organic compounds.
1-Methyl-2-pyrrolidinone (NMP)
1-Methyl-2-pyrrolidinone (NMP) is a modified aromatic lactam solvent used in electronics and polymer manufacturing. Classified in HTS 2933.79.08.00 due to its nitrogen heterocyclic lactam structure and inclusion in U.S. note 3 for environmental/safety-regulated compounds.
Caprolactam Modified with Aromatic Groups
Aromatic-modified caprolactam serves as an intermediate for nylon-6 production with enhanced properties. It qualifies for HTS 2933.79.08.00 as an other aromatic lactam under U.S. note 3, featuring nitrogen hetero-atom in heterocyclic ring.
N-Phenyl-2-Pyrrolidone
N-Phenyl-2-pyrrolidone is an aromatic lactam used in dye synthesis and pharmaceuticals. Its classification under HTS 2933.79.08.00 stems from the aromatic substitution on the lactam nitrogen hetero-ring, as specified in note 3.
Epsilon-Caprolactam Aromatic Derivative
This epsilon-caprolactam derivative with aromatic modification acts as a stabilizer in polymer processing. HTS 2933.79.08.00 applies per chapter notes for other aromatic lactams listed in U.S. note 3.
Quinolactam Derivative
Quinolactam derivative represents fused aromatic lactams used in medicinal chemistry. Classified in HTS 2933.79.08.00 for other aromatic lactams under U.S. note 3.
N-Acetyl-2-Pyrrolidone
N-Acetyl-2-pyrrolidone is a chemically defined acetylated aromatic lactam for solvent applications. HTS 2933.79.08.00 per chapter note (a) and U.S. note 3 listing.
Indolactam Intermediate
Indolactam intermediate features fused indole-lactam structure for alkaloid synthesis. Its aromatic lactam nature places it in HTS 2933.79.08.00 under note 3.
2-Pyrrolidone Aromatic Ester
An ester derivative of 2-pyrrolidone with aromatic modification, used in pharmaceutical formulations. Falls under HTS 2933.79.08.00 as modified aromatic lactam per note 3 and ester classification rules.