Cyanine 644-cAMP is a fluorescently labeled cAMP analog and can be used to probe cAMP receptors. Single molecules of fluorescently labeled cAMP have been imaged as the probe binds to the receptor on the surface of <i>Dictyostelium</i> cells.

<ul>

<li>&lambda;_Ex/&lambda;_Em (MeOH) = 644/670 nm</li>

<li>Dark solid soluble in H₂O, DMF or DMSO</li>

<li>Store desiccated at -20&deg;C and protect from light</li>

<li>C₅₀H₆₁N₉O₁₂PS</li>

<li>MW: 1043.11</li>

</ul>