Phloroglucinol carboxylic acid is a trihydroxybenzoic acid, a type of phenolic acid.

It is produced by Pseudomonas fluorescens.

[1] It is a catechin degradation product excreted by the bacterium Acinetobacter calcoaceticus, a species of bacteria part of the human body normal flora, grown on catechin as sole source of carbon.

[3] This article about an aromatic compound is a stub.

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