2907.29.90.00/Nordihydroguaiaretic Acid (NDGA)/Japan

Nordihydroguaiaretic Acid (NDGA) from Japan

NDGA is a potent antioxidant polyphenol from creosote bush used in food preservation and pharmaceuticals. HTS 2907.29.90.00 covers this tetraphenolic lignan as 'other' polyphenol. Synthetic versions also commercially available.

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 prior sanction letters for food additive use

• Specify natural vs synthetic origin

• Document peroxide value for antioxidant efficacy