L-xylulose 5-phosphate is the 5-O-phospho derivative of L-xylulose. It has a role as an Escherichia coli metabolite. It is functionally related to a L-xylulose. It is a conjugate acid of a L-xylulose 5-phosphate(2-). It is an enantiomer of a D-xylulose 5-phosphate.