PQQ Cofactor

**Definition:** A pyrrolo-quinoline having two adjacent keto-groups at the 4 and 5 positions and three acidic carboxyl groups. It is a coenzyme of some DEHYDROGENASES.

**Tree numbers:** - D03.633.100.810.835.661 - D08.211.682

**Synonyms:** - 2,7,9-Tricarboxypyrroloquinoline Quinone - 4,5-Dihydro-4,5-Dioxo-1-H-Pyrrolo(2,3-f)Quinoline-2,7,9-Tricarboxylic Acid - PQQ Coenzyme - Coenzyme PQQ - Pyrrolo-Quinoline Quinone - Pyrroloquinoline Quinone - 2,7,9-Tricarboxy-1H-Pyrrolo-(2,3-f)Quinoline-4,5-Dione - Methoxatin