3'-Guanylic acid, guanylyl-(3'→5')-, cyclic nucleotide, diammonium salt (9CI)

Cyclic di-GMP (c-di-GMP) diammonium is a STING activator and a global bacterial second messenger, which regulates biofilm formation, motility, and virulence in diverse bacterial species[1][2].

[1]. Wang Z, et al. STING activator c-di-GMP enhances the anti-tumor effects of peptide vaccines in melanoma-bearing mice. Cancer Immunol Immunother. 2015;64(8):1057-1066. [2]. Burdette DL, et al. STING is a direct innate immune sensor of cyclic di-GMP. Nature. 2011 Sep 25;478(7370):515-8.