3-Methyl-5-Pyrazolone Flake Form
3-Methyl-5-pyrazolone in flake form for easier handling in pharmaceutical intermediate production falls under HTS 2933.19.70.00. Its classification stems from the core unfused pyrazole ring meeting Chapter 29 note requirements for pure heterocyclic compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing nucleic acid-like nitrogen heterocycles
Other nitrogen heterocyclic compounds without unfused pyrazole classify under 2934.
If imported as laboratory reagent kit component
Diagnostic or lab reagents containing the compound classify as chemical mixtures in 3822.
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Import Tips & Compliance
• Use anti-caking stabilized packaging only if necessary for transport per Chapter 29 note (f)
• Include NMR spectral data if requested to confirm pyrazole ring integrity
• Register with US EPA if used in pesticide intermediates to avoid delays
Related Products under HTS 2933.19.70.00
3-Methyl-5-Pyrazolone Powder
Pure 3-Methyl-5-pyrazolone is a heterocyclic compound featuring an unfused pyrazole ring with a methyl group at position 3, classified under HTS 2933.19.70.00 as a nitrogen-heterocyclic compound containing a pyrazole ring structure. It serves as a key intermediate in organic synthesis for dyes and pharmaceuticals.
3-Methyl-5-Pyrazolone Technical Grade
Technical grade 3-Methyl-5-pyrazolone (98% purity) is used in industrial dye manufacturing and classified under HTS 2933.19.70.00 due to its unfused pyrazole ring structure. This compound is a fundamental building block for azo dye synthesis.
High Purity 3-Methyl-5-Pyrazolone 99.5%
Ultra-high purity 3-Methyl-5-pyrazolone (99.5%) for advanced pharmaceutical synthesis is classified under HTS 2933.19.70.00. This specification confirms its status as a separate chemically defined organic compound with pyrazole ring per Chapter 29.
3-Methyl-5-Pyrazolone Dye Coupler Grade
Specialty grade 3-Methyl-5-pyrazolone optimized as dye coupler in azo pigment production falls under HTS 2933.19.70.00. Its pure pyrazole structure distinguishes it from formulated dye products excluded by Chapter 29 notes.
3-Methyl-5-Pyrazolone with Stabilizer
3-Methyl-5-pyrazolone containing added stabilizer for transport preservation is classified under HTS 2933.19.70.00 per Chapter 29 note (f). The stabilizer does not alter its primary pyrazole ring classification.
Industrial 3-Methyl-5-Pyrazolone Drums
Bulk 3-Methyl-5-pyrazolone packaged in 25kg fiber drums for industrial dye manufacturing is under HTS 2933.19.70.00. Classification follows the pure heterocyclic compound regardless of industrial packaging.