Other
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: > Other: > Other: > Other
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 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
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.
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.
1-(4-Methoxyphenyl)-3-methylpyrazole
1-(4-Methoxyphenyl)-3-methylpyrazole features methoxy-substituted aromatic ring attached to unfused pyrazole, fitting HTS 2933.19.43.00. Ether functionality secondary to pyrazole classification per chapter notes. Used in medicinal chemistry.