Ethyl 5-oxo-1-phenyl-1H-pyrazole-3-carboxylate from Mexico
Pyrazole carboxylate ester intermediate for photographic dye-formers and developers. The unfused pyrazole ring with aromatic modification qualifies under HTS 2933.19.30.95.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide esterification certificates confirming Chapter 29 note A ester classification rules
• Include HPLC purity reports (>95%) for statistical reporting requirements
• Ensure proper venting for ethyl ester volatile compound shipments