D-xylonate => 2-dehydro-3-deoxy-D-arabinonate + H2O
d-xylonate => 2-dehydro-3-deoxy-d-arabinonate + h2o
D-xylonate => 2-dehydro-3-deoxy-D-arabinonate + H2O
d-xylonate => 2-dehydro-3-deoxy-d-arabinonate + h2o