5-O-(1-carboxyvinyl)-3-phosphoshikimic acid is a polyunsaturated dicarboxylic acid and a phosphoshikimic acid. It has a role as an Escherichia coli metabolite. It is functionally related to a shikimic acid. It is a conjugate acid of a 5-O-(1-carboxylatovinyl)-3-phosphonatoshikimate.