Pterostilbene (CAS: 537-42-8) is a natural stilbenoid compound primarily found in blueberries, sandalwood, and grapes. As a methylated derivative of resveratrol, it exhibits superior antioxidant, anti-inflammatory, and anti-aging​ activities. The U.S. FDA classified it as a dietary supplement (GRAS) in 2022, while the EU ESFA approved it as a novel food ingredient (2021/C 456/03). China's National Health Commission included it in the food additive catalog (GB 2760-2023) in 2023.

Product Name: Pterostilbene

IUPAC Name: (E)-3,5-Dimethoxy-4'-hydroxystilbene

CAS No.​: 537-42-8

Molecular Formula: C₁₆H₁₆O₃