Iso-Lysergic Acid Hydrazide Salts from Mexico
Iso-lysergic acid hydrazide salts are derivatives of lysergic acid from rye ergot, classified as salts under HTS 2939.63.00.00. These chemically defined compounds are used in neuropharmacological studies.
Duty Rate — Mexico → 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
• Reference specific pharmacopeial monographs for purity and identification testing
• Include stability data for transport conditions to prevent degradation
• Avoid bulk packaging over 1kg without special justification for research quantities