Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Products classified under HTS 2933.19.04.00
Aminomethylphenylpyrazole (Phenylmethylaminopyrazole)
Aminomethylphenylpyrazole is a chemically defined aromatic heterocyclic compound containing an unfused pyrazole ring with nitrogen hetero-atoms, specifically named in HTS 2933.19.04.00. It serves as a key intermediate in pharmaceutical synthesis and agrochemical production. This classification applies due to its precise chemical structure matching the heading for aromatic pyrazole derivatives.
3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl Methyl Pyrazolone)
This is a specific aromatic pyrazolone derivative with a p-tolyl substituent and methyl group, explicitly listed under HTS 2933.19.04.00 for unfused pyrazole ring compounds. Commonly used as a dye intermediate and pharmaceutical precursor. Its classification stems from the chapter's focus on nitrogen-heterocyclic aromatics with precise pyrazole structures.
Phenylmethylaminopyrazole Technical Grade Powder
Technical grade powder of Aminomethylphenylpyrazole, a pure aromatic pyrazole compound under HTS 2933.19.04.00, with impurities not affecting its chemical definition. Used in fine chemical synthesis for herbicides and drugs. Fits chapter scope for separate chemically defined heterocyclics with nitrogen-only pyrazole rings.
p-Tolyl Methyl Pyrazolone Crystals 99% Purity
High-purity crystalline form of 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one, directly specified in HTS 2933.19.04.00 as an aromatic pyrazole derivative. Essential for azo dye coupling and analgesic synthesis. Classified here due to its unfused pyrazole ring and chapter precedence for latest numerical heading.
Aminomethylphenylpyrazole with Stabilizer
Stabilized form of Aminomethylphenylpyrazole containing added anticaking agent for preservation/transport, explicitly allowed under HTS 2933.19.04.00 per chapter note (f). Used in bulk for pharmaceutical R&D. Remains classified as the core chemically defined pyrazole compound.
p-Tolyl Methyl Pyrazolone Aqueous Solution
Aminomethylphenylpyrazole dissolved in water as per chapter note (d), maintaining HTS 2933.19.04.00 classification for the named aromatic pyrazole. Used for safe lab handling in dye production. Solution form is normal for this reactive compound without specific use adaptation.
High-Purity Aminomethylphenylpyrazole for Pharma
Pharma-grade Aminomethylphenylpyrazole, 99.5% pure, listed under HTS 2933.19.04.00 as aromatic pyrazole with nitrogen hetero-atoms. Intermediate for antiviral drug synthesis. Pure form ensures Chapter 29 applicability over mixtures.
p-Tolyl Methyl Pyrazolone Dye Coupler
Specialty grade of p-Tolyl Methyl Pyrazolone optimized as dye coupler, still under HTS 2933.19.04.00 before formulation. Aromatic pyrazole for azo pigment production. Remains pure compound per chapter exclusions for coloring matter.