2922.49.37.00/DL-Tyrosine/Mexico

DL-Tyrosine from Mexico

DL-Tyrosine is a synthetic aromatic amino acid with phenolic oxygen function, falling under HTS 2922.49.37.00 as 'other' oxygen-function amino-compounds. Despite its phenolic group, it qualifies due to single carboxyl classification and exclusion from proteinogenic listings. Commonly used in nootropic supplements and biochemical research.

Duty Rate — Mexico → United States

6.5%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Include spectral analysis (NMR/IR) verifying aromatic structure and single oxygen-function amino-acid nature to prevent misclassification as phenols (2907)

• Label with correct nomenclature avoiding 'L-tyrosine' designation if racemic; racemates have different regulatory considerations

• Watch for reclassification as feed-grade additives (2309) if impure or mixed with carriers; must be >98% pure chemically defined compound

DL-Tyrosine from Mexico — Import Duty Rate | HTS 2922.49.37.00