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L-Phenylalanine from Japan

L-Phenylalanine is an essential aromatic amino acid explicitly named in HTS 2922.49.10.00, featuring both amino and carboxylic acid groups. Widely used in nutritional supplements, pharmaceuticals, and as a sweetener precursor (aspartame). Meets criteria for oxygen-function amino-acids.

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%

Import Tips

Specify L-enantiomer with optical rotation data (CAS 63-91-2)

For food use, provide Kosher/Halal certs and amino acid purity >98.5%

Segregate from D-isomer to avoid racemic mixture reclassification