NX-7081 is a novel small molecule inhibitor of Hsp90, which blocks components of inflammation, including cytokine production, protein kinase activity, and angiogenic signaling. SNX-7081 showed strong binding affinity to Hsp90 and expected induction of Hsp70. NF-kappaB nuclear translocation was blocked by SNX-7081 at nanomolar concentrations, and cytokine production was potently inhibited. Growth factor activation of ERK and JNK signaling was significantly reduced by SNX-7081. NO production was also sharply inhibited. In animal models, SNX-4414 fully inhibited paw swelling and improved body weight.