In enzymology, an ADP-sugar diphosphatase is an enzyme that catalyzes the chemical reaction ADP-sugar + H2O ⇌ {\displaystyle \rightleftharpoons } AMP + alpha-D-aldose 1-phosphateThus, the two substrates of this enzyme are ADP-sugar and H2O, whereas its two products are AMP and alpha-D-aldose 1-phosphate. Wikipedia