QAQ (dichloride)

QAQ dichloride, a photoswitchable voltage-gated Nav and Kv channels blocker, blocks channels in its trans form (of the azobenzene photoswitch), but not in its cis form. QAQ dichloride is membrane-impermeant and only infiltrates pain-sensing neurons that express endogenous import channels. QAQ dichloride acts as a light-sensitive analgesic and can be used for studying of signaling mechanisms in acute and chronic pain[1][2].