Isoproterenol Hydrochloride from Canada
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 — Canada → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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