Collidines, lutidines and picolines
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Collidines, lutidines and picolines
Duty Rate (from China)
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 2933.39.10.00
2-Picoline (2-Methylpyridine)
2-Picoline is a liquid organic compound with the formula C6H7N, featuring a methyl group at the 2-position of the pyridine ring. It falls under HTS 2933.39.10.00 as a picoline, which are methylated pyridines containing an unfused pyridine ring. Primarily used as an intermediate in pharmaceutical and agrochemical synthesis.
4-Picoline (4-Methylpyridine)
4-Picoline features a methyl substituent at the 4-position of the pyridine ring, widely used in agrochemical and pharmaceutical production. It qualifies for HTS 2933.39.10.00 as a picoline under the heterocyclic nitrogen compounds with unfused pyridine ring provision. Often stabilized with anticaking agents per Chapter 29 note (f).
2,6-Lutidine (2,6-Dimethylpyridine)
2,6-Lutidine is a symmetric dimethylpyridine used in coordination chemistry and as a ligand precursor. Classified in HTS 2933.39.10.00 per heading description for lutidines with unfused pyridine ring structure. Sterically hindered base for synthetic applications.
Collidine Mixture (2,4,6-Trimethylpyridine)
Collidine refers to trimethylpyridines like 2,4,6-trimethylpyridine, used in epoxy resin curing and as resolving agents. HTS 2933.39.10.00 covers collidines as specifically named pyridine derivatives with unfused rings. High boiling point (170°C) solvent applications.
3-Picoline (3-Methylpyridine)
3-Picoline is a colorless liquid with a pyridine ring substituted by a methyl group at the 3-position, used in vitamin B6 synthesis. Classified under HTS 2933.39.10.00 as a picoline per Chapter 29 notes for unfused pyridine ring compounds. Key intermediate for pharmaceuticals and resins.
2,4-Lutidine (2,4-Dimethylpyridine)
2,4-Lutidine contains two methyl groups at positions 2 and 4 on the pyridine ring, used as a solvent and catalyst in organic synthesis. Falls under HTS 2933.39.10.00 as a lutidine, specifically named in the heading for pyridine derivatives. Meets Chapter 29 purity requirements for separate classification.
α-Picoline Technical Grade
Technical grade α-picoline (primarily 2-methylpyridine >85%) used in bulk chemical manufacturing. Still qualifies under HTS 2933.39.10.00 if identified as the separate compound per Chapter 29 note 1(a), despite minor impurities. Common in pesticide intermediate production.
Lutidine Pharmaceutical Grade
High-purity lutidine (mixed 2,3-/3,5-isomers >99.5%) for Active Pharmaceutical Ingredient synthesis. HTS 2933.39.10.00 applies as lutidines are specifically enumerated. GMP manufactured with full traceability.