1-Phenyl-3-methyl-5-pyrazolone
1-Phenyl-3-methyl-5-pyrazolone is a modified aromatic pyrazole derivative used in dye and pharmaceutical synthesis. Classified under HTS 2933.19.43.00 for unfused pyrazole compounds that are aromatic or modified aromatic. The ketone functionality does not change its primary pyrazole classification.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported solely for ketone functionality
Principal function might be argued as cyclic ketone if pyrazole not emphasized, though pyrazole takes precedence per chapter notes
If pre-dispersed in solvent for dye use
Synthetic organic products used as dye intermediates may shift to Chapter 32 if put up for specific use
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Import Tips & Compliance
• Provide spectral analysis (NMR/IR) confirming pyrazole ring structure; label as 'not for medicinal use' if research grade; watch for GRI 1 misclassification as ketones (2914)
Related Products under HTS 2933.19.43.00
3-Amino-1-phenylpyrazole
3-Amino-1-phenylpyrazole is an aromatic heterocyclic compound containing an unfused pyrazole ring with nitrogen hetero-atoms and an amino substituent. It falls under HTS 2933.19.43.00 as an aromatic pyrazole derivative used primarily as a pharmaceutical intermediate. This chemically defined organic compound meets Chapter 29 note (a) for separate organic compounds.
4-Nitro-1-phenylpyrazole
4-Nitro-1-phenylpyrazole contains an unfused aromatic pyrazole ring with nitro substitution, fitting HTS 2933.19.43.00 criteria. The nitro group is explicitly included in pyrazole derivatives per Chapter 29 notes on nitrated compounds. Used as intermediate for agrochemicals and pharmaceuticals.
3-Carboxy-1-methylpyrazole
3-Carboxy-1-methylpyrazole features an unfused pyrazole ring with carboxylic acid functionality, classified as aromatic pyrazole 'other' under HTS 2933.19.43.00. The acid function doesn't override pyrazole classification per Chapter 29 ester/acid rules. Common intermediate for herbicides.
1-Benzyl-3,5-dimethylpyrazole
1-Benzyl-3,5-dimethylpyrazole is a substituted aromatic pyrazole used in pharmaceutical research and synthesis. Falls under HTS 2933.19.43.00 as 'other' unfused pyrazole ring compounds that are aromatic or modified aromatic. Meets Chapter 29 criteria for chemically defined heterocycles.
4-Acetyl-1-phenylpyrazole
4-Acetyl-1-phenylpyrazole contains an unfused pyrazole ring with aromatic ketone substitution, properly classified in HTS 2933.19.43.00. The pyrazole moiety determines classification over acetyl group per chapter note numerical order rules. Used in advanced materials synthesis.
3-Trifluoromethyl-1-phenylpyrazole
3-Trifluoromethyl-1-phenylpyrazole is an aromatic pyrazole with fluorinated substituent, classified under HTS 2933.19.43.00 for unfused pyrazole 'other' compounds. Halogenated derivatives included per Chapter 29 notes. Key intermediate for modern pesticides.