 empty field: The reaction is stoichiometric balanced, also in cases where only a proton or water is missing. incomplete: The reaction is stoichiometric imbalanced. There are missing chemical elements at the educt or product site. Get more information in Missing Substrate or Missing Product columns. n.a.: Some reactant structures are not available. The stoichiometry check cannot be executed. generic compounds: Reaction with generic compounds, that is stoichiometric imbalanced or has missing reactant structures. 