Isoproterenol Hydrochloride from China
Isoproterenol hydrochloride is the hydrochloride salt of isoproterenol, a synthetic catecholamine hormone derivative used primarily for bronchospasm relief in asthma. It is classified in HTS 2937.90.2000 as a structural analogue of catecholamine hormones with primary beta-adrenergic hormonal activity. This meets Chapter 29's criteria for chemically defined hormone derivatives.
Duty Rate — China → United States
100%
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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide pharmacopoeia compliance certificates (USP/EP) to validate as hormone API under this specific subheading
• Document light-sensitive packaging requirements to prevent degradation during transit