1-(3-Sulfo propyl) pyridinium hydroxide from Mexico
A chemically defined heterocyclic compound containing an unfused pyridine ring with a sulfo propyl substituent, classified under HTS 2933.39.08.00 per Chapter 29 notes for separate organic compounds with nitrogen hetero-atoms. Used as an intermediate in pharmaceutical synthesis and dye production.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.60100%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (COA) confirming chemical identity and purity as required for Chapter 29 compounds
• Declare as hazardous material if meeting DOT criteria for corrosive properties; use UN proper shipping name
• Avoid misclassification as sulfonated derivatives under 2933.40 if sulfo group doesn't define principal character