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.

Terbufibrol reduces the levels of serum total cholesterol in normal and hypercholesterolemic male rats.

Phenylpyruvic acid is a keto-acid that is an intermediate or catabolic byproduct of phenylalanine metabolism. It has a slight honey-like odor. Levels of phenylpyruvate are normally very low in blood or urine. High levels of phenylpyruvic acid can be found in the urine of individuals with phenylketonuria (PKU) an inborn error of metabolism.