Amino acids are in an equilibrium between two acids with the proton (H+) moving between the amino group and the carboxyl group as shown below. In such an equilibrium, the weaker acid always ...

1907— Adolf Windaus and his associate W. Vogt produce histamine synthetically by removing the carboxyl group from the amino acid histidine. 1910—Henry Dale and his colleagues at the Wellcome ...

Fatty acids are organic acids with at least one carboxyl (-C(=O)OH, -COOH or -CO2H) group and a long carbon chain that can be joined by double bonds, as in unsaturated fatty acids, or single bonds ...