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oxyresveratrol

n. A stilbenoid and tyrosinase inhibitor, found in the heartwood of (taxlink Artocarpus lakoocha species noshow=1).

Wikipedia
Oxyresveratrol

Oxyresveratrol is a stilbenoid. It is found in the heartwood of Artocarpus lakoocha and in the traditional drug 'Puag-Haad' made from it. It is also the aglycone of mulberroside A, a compound found in Morus alba, the white mulberry.

Oxyresveratrol is a potent tyrosinase inhibitor.