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2933.19.43.00/1-Phenyl-3-methyl-5-pyrazolone/Japan

1-Phenyl-3-methyl-5-pyrazolone from Japan

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.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• 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)