4,9-Dihydroxyphenazine-1,6-dicarboxylic Acid Dimethylester and the 'Missing Link' in Phenazine Biosynthesis

Abstract
4,9-Dihydroxyphenazine-1,6-dicarboxylic acid dimethylester, the ester form of a proposed missing link in the biosynthesis of phenazines, was isolated from a strain of Pseudomonas cepacia.