DL-Phenylalanine from Japan

DL-Phenylalanine is an aromatic amino acid containing a single carboxyl oxygen function, classified under HTS 2922.49.37.00 as an oxygen-function amino-compound that is neither a proteinogenic amino acid nor a drug. It is used as a nutritional supplement and in pharmaceutical intermediates. The code covers other aromatic amino acids and their simple derivatives not specified elsewhere.

Duty Rate — Japan → 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

• Provide certificate of analysis confirming chemical purity and structure as an aromatic amino acid with single oxygen function to avoid reclassification

• Declare exact CAS number (150-30-1 for DL form) and ensure packaging complies with chemical transport regulations (DOT/UN)

• Avoid common pitfall of classifying as protein hydrolysates (3504); this is a separate chemically defined compound per Chapter 29 notes