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2930.90.49.50/Lipoic Acid (Alpha-Lipoic Acid)/Japan

Lipoic Acid (Alpha-Lipoic Acid) from Japan

Alpha-lipoic acid contains a five-membered disulfide ring with carboxylic acid, classified under HTS 2930.90.4950 as organo-sulfur acid. Direct C-S bonds qualify; cyclic but not excluded heterocyclic per note 8. Used as antioxidant supplement and diabetes treatment.

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 R/S racemic mixture specification (rac-alpha-lipoic acid)

• Provide USP assay >98% and heavy metals certification

• Distinguish bulk powder from encapsulated supplement form