proanthocyanidin a-4

Proanthocyanidin A4 is a polyphenol isolated from the root of E. sinica, with anti-inflammatory effects.

4-Dimethylaminocinnamaldehyde is a photometric reagent for primary aromatic amines. The 4-(dimethylamino)cinnamaldehyde assay is currently used to quantify proanthocyanidin (PAC) content in cranberry products.