D(-)-p-Hydroxyphenylglycine Sodium Salt from Mexico
Sodium salt of d(-)-p-Hydroxyphenylglycine, an aromatic oxygen-function amino-acid salt explicitly covered by HTS 2922.50.11.00 as per Chapter 29 classification rules for salts of organic compounds. Widely used in the manufacturing of semisynthetic penicillins and cephalosporins.
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
• Verify stereospecificity with polarimetry data (specific rotation for d(-)-isomer) to prevent reclassification disputes
• Label as 'pharmaceutical intermediate, not for direct medicinal use' to comply with FDA import alerts on unapproved drugs
• Check for stabilizer additions per Chapter 29 note (f); excess additives may shift to heading 3824