Competitive c-Jun N-terminal kinase (JNK) inhibitor (IC50 = 280 nM) that displays > 100 fold selectivity over p38α and no activity at mTOR and PI-3K. Inhibits JNK interacting protein 1 (JIP1)-JNK binding (IC50 = 500 nM) and prevents JNK substrate phosphorylation. Blocks JNK-dependent Con A-induced liver damage and restores insulin sensitivity in a mouse model of type II diabetes.