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Quercetin-3-O-Glucoside from China

Quercetin-3-O-glucoside is a flavonoid glycoside extracted from onions and apples, falling under HTS 2938.90.00.00 as a glycoside derivative. It serves as an antioxidant in nutraceuticals and functional foods.

Duty Rate — China → United States

16.2%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Submit structural analysis confirming glycosidic bond to distinguish from aglycone flavonoids

Declare as >95% purity to maintain Chapter 29 classification versus mixtures

Avoid retail packaging; bulk powder imports classified here, not Chapter 21