THE oxidation of α-diketones and α-keto-carboxylic acids by hydrogen peroxide involves the breaking of the carbon-carbon bond between the carbonyl carbon and the carbonyl or carboxyl groups 1.

The structures of two new phases of divalent cation soaps have been solved. The polar groups (cations and carboxyl groups) form planar two-dimensional networks, either square or hexagonal ...

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 ...