High-Purity D(-)-p-Hydroxyphenylglycine p-Toluenesulfonate Salt from Mexico
p-Toluenesulfonic acid salt of D(-)-p-Hydroxyphenylglycine (>99.5% purity), HTS 2922.50.11.00 as organic acid salt of specified compound. Used in resolution of enantiomers.
Duty Rate — Mexico → 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
• Chiral HPLC method validation
• TsOH counterion quantification
• Patent status for exclusivity claims