Abstract
A new intermediate in aromatic synthesis ("chorismic-acid") was isolated from the auxotroph of Aerobacter aerogenes. It is converted enzymically into anthranilic-acia, prephenic-acid, phenylpyruvic-acid, 4-hydroxyphenyl-pyruvic-acid and 4-hydroxybenzoic-acid. Chorismic acid is formed by cell extracts from shikimic-acid and is also accumulated by whole cells.