Mepivacaine from Canada
Mepivacaine, a piperidine-based aminoamide anesthetic, contains a key acyclic amide linkage. HTS 2924.19.80.00 covers this as an 'other' acyclic amide, prioritizing amide function over any heterocyclic elements per classification notes.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
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 structural formula documentation emphasizing acyclic amide as principal function
• FDA prior notice required; include stability data for transport per chapter note (f)
• Avoid bulk packaging that suggests industrial use, triggering chapter 38 mixtures