Somatrem (Methionyl Human Growth Hormone) from Canada
Somatrem is a structurally modified form of human somatotropin with an extra methionine residue at the N-terminus, making it a derivative used for growth hormone replacement therapy. This analogue maintains the biological activity of natural somatotropin. Falls under HTS 2937.11.00.00 due to its classification as a somatotropin derivative used primarily as a hormone.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals: 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
• Include structural characterization documents showing the methionine modification to confirm derivative status
• Ensure cold chain documentation for biologics stability during transport
• Declare as 'hormone for therapeutic use' to prevent classification as research chemical