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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If synthetic fluorescent brightener
If used as luminophore, excludes to Chapter 32 per notes.
If nucleic acid derivative
Nucleic heterocyclics in 2934, but unfused pyrazole stays in 2933.
If acyclic ketone function primary
Oxygen-function ketones in 2914 if not ring-dominated.
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Import Tips & Compliance
• Certify not pre-mixed for retail dye use to stay in Chapter 29
• Track origin-specific quotas on dye chemicals
• Include spectral data for identity confirmation
Related Products 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.