N-(6-Chloro-9H-pyrido[3,4-b]indol-8-yl)-3-pyridinecarboxamide is an inhibitor of IKKβ, an enzyme involved with the cytokine-activated intracellular signaling pathway that regulates the immune response. N-(6-Chloro-9H-pyrido[3,4-b]indol-8-yl)-3-pyridinecarboxamide also inhibits osteoclast differentiation.