2922.49.37.00/DL-Tyrosine/Japan

DL-Tyrosine from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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