Homogentisic Acid from Japan
Homogentisic acid (2,5-dihydroxyphenylacetic acid) has carboxylic acid on side chain rather than directly on ring. Still qualifies under HTS 2918.19.20.00 per note 3 for aromatic compounds with alcohol function. Important in metabolic disorder research (alkaptonuria).
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Side-chain COOH; confirm aromatic ring substitution pattern for classification
• Medical research use; include IRB protocol if for human studies
• Unstable in air; import temperature-controlled with stability data