Chloramphenicol Research Grade Crystals from Canada
High-purity chloramphenicol crystals (99.5%+) for laboratory research and analytical standards. Classified HTS 2941.40.00.00 as pure chemically defined antibiotic. Not for therapeutic use per labeling.
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
• Include SDS and 'Research Use Only' labeling to prevent FDA drug import scrutiny
• Small package exemption possible under <100g/research; larger requires end-use verification
• HPLC certificate with impurity profile (<0.1% each) avoids 'mixture' reclassification