Lipoic Acid from Japan
Alpha-lipoic acid contains a five-membered dithiolane ring with sulfur atoms directly linked to carbon. Classified under 2930.90.92 as other organo-sulfur compound used as nutritional supplement and antioxidant. Qualifies per Chapter 29 notes for heterocyclic sulfur compounds.
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
• FDA prior notice required for dietary supplement imports; include NDI status documentation
• Purity >98% certification essential to distinguish from synthetic mixtures
• Labeling must specify racemic or R- form to avoid pharmaceutical classification issues