Niridazole Crystals from China
Niridazole is a nitrothiazole-imidazole hybrid used as an antischistosomal agent, featuring the required unfused imidazole ring. As a chemically defined aromatic heterocyclic compound, it falls under HTS 2933.29.35.00 described in additional U.S. note 3.
Duty Rate — China → United States
31.5%
Rate breakdown
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide WHO prequalification documents if sourced from international manufacturers
• Include polymorphic form characterization to ensure batch consistency
• Declare exact CAS number (550-18-5) on commercial invoice for verification