Methadone Phosphate from China
Methadone phosphate provides a buffered salt form for oral solutions in opioid maintenance programs. Under HTS 2922.31.00.00, classified with the methadone base per salt rules in chapter notes, as an oxygen-function amino-ketone. Pure form without multi-oxygen functions.
Duty Rate — China → United States
112.5%
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
9903.05.3112.5%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
• Ensure pH stability certification; comply with narcotic manifest filing; avoid delays from missing end-user statements