3-(5-Amino-3-methyl-1H-pyrazol-1-yl)-benzenesulfonic acid from China
This is a chemically defined aromatic pyrazole derivative with a sulfonic acid group, specifically listed under HTS 2933.19.08.00. It serves as an intermediate in the synthesis of azo dyes and pharmaceuticals. The compound contains an unfused pyrazole ring with nitrogen hetero-atoms, qualifying it for Chapter 29 classification per the chapter notes.
Duty Rate — China → United States
40.8%
Rate breakdown
9903.03.0110%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
9903.88.0325%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)
Import Tips
• Verify chemical purity and provide Certificate of Analysis (CoA) to confirm it matches the exact listed compound
• Ensure SDS and proper hazardous material labeling for sulfonic acid derivatives during transport
• Avoid misclassification as a finished dye (HTS 3204) by documenting its use as a chemical intermediate