For other salt forms or metabolites please inquire. Potent membrane-permeant fluorescent activator (λexc 471 nm, λem 536 nm) of cAMP-dependent protein kinase. While 8-NBD-cAMP is almost non-fluorescent in aqueous solutions, it fluoresces strongly in hydrophobic environments such as hydrophobic protein binding sites. Detailed technical information available. Reference: Kraemer et al., J. Mol. Biol., 306, 1167 - 1177 (2001); Wu et al., Biophys. J., 100, 1226- 1232 (2011); Chen et. al., Bioorg. Med. Chem. Lett., 22, 4038 - 4043 (2012).