2922.50.11.00/D(-)-p-Hydroxyphenylglycine Potassium Salt/Mexico

D(-)-p-Hydroxyphenylglycine Potassium Salt from Mexico

Potassium salt derivative of d(-)-p-Hydroxyphenylglycine, fitting HTS 2922.50.11.00 as an inorganic salt of a chemically defined aromatic amino-acid-phenol. Used in bioprocesses for antibiotic side-chain synthesis.

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)

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Import Tips

• Test for heavy metals per USP standards; impurities >ppm levels trigger FDA scrutiny

• Use NA 1759 UN number for transport; verify IMDG compliance for ocean freight

• Document as 'not for human consumption' to sidestep Chapter 30 finished product rules