Abstract: Objects of the present invention are to provide a mayenite compound which can induce electron donation reaction, H? donation reaction, deoxygenation reaction, and dehydration reaction; a multifunctional agent which contains the mayenite compound which is not dissolved in a solvent, and which can induce electron donation reaction, H? donation reaction, deoxygenation reaction, and dehydration reaction; and a method for producing a mayenite-compound-containing product. The invention provides a mayenite compound characterized by comprising enclosing electron and H?, a multifunctional agent characterized in that the agent contains at least one of the mayenite compound I and a mixture II of the mayenite compound enclosing electron and the mayenite compound enclosing H?, and exhibits radical scavenging activity, reducing property, deoxygenation performance, and dehydration performance; and a method for producing a mayenite-compound-containing product containing the aforementioned mayenite compound.