MAO A/HDAC-IN-1 is a dual?inhibitor?of monoamine oxidase A (MAO A) and HDAC. MAO A/HDAC-IN-1 can be used for glioma research. MAO A/HDAC-IN-1 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.