Isoquinoline 95% with Stabilizer from China
Isoquinoline at 95% purity with added stabilizer for transport, allowed under Chapter 29 note (f), remains HTS 2933.49.15.00. Used in agrochemical formulation.
Duty Rate — China → United States
112.5%
Rate breakdown
9903.04.6094.2%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
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• List stabilizer composition to confirm it doesn't change product use
• Validate stabilizer is solely for preservation per chapter notes