3-Methyl-5-Pyrazolone Powder from Mexico
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.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide Certificate of Analysis (COA) confirming 99%+ purity and pyrazole structure to avoid reclassification
• Ensure proper Hazard Communication labeling as it may be irritant; comply with TSCA for US chemical import
• Declare exact CAS number (108-49-6) on entry documents to prevent customs holds