STING ligand

Cyclic di-inosine monophosphate (c-di-IMP) is a synthetic analog of the bacterial second messengers c-di-AMP and c-di-GMP.
Although chemically different, c-di-IMP exhibits similar conformational features and biological properties as c-di-GMP. In vitro studies have revealed that c-di-IMP displays comparable capacities to c-di-GMP in promoting the activation and maturation of antigen presenting cells [1]. Furthermore, c-di-IMP has been shown to possess strong adjuvant properties when co-administered with an antigen by the mucosal route [1].

The immunostimulatory activity of c-di-IMP depends on the signaling molecule STING [2]. Cells with reduced STING expression respond weakly to c-di-IMP in contrast to cells expressing high levels of STING.


Description: STING Agonist
Synonym: Cyclic di-inosine monophosphate, c-di-IMP sodium salt
CAS number: 79940-41-3
Formula: C20H20N8O14P2 .2Na
Molecular weight: 704.35
Purity: ≥ 95% by LC/MS
Solubility: 50 mg/ml in water

Quality control:
- The biological activity is assessed by measuring induction of the interferon pathway in THP1-Blue™ ISG cells.
- The absence of endotoxins and other bacterial contaminants has been confirmed using HEK-Blue™ TLR4 and HEK-Blue™ TLR2 cells.


- 1 mg lyophilized c-di-IMP
- 1.5 ml endotoxin-free water

Product is shipped at room temperature and should be stored at -20 °C. Product is sterile filtered prior to lyophilization.


1. Libanova R. et al., 2010.The member of the cyclic di-nucleotide family bis-(3', 5')-cyclic dimeric inosine monophosphate exer ts potent activity as mucosal adjuvant. Vaccine. 28(10):2249-58.

2. Burdette DL. et al., 2011. STING is a direct innate immune sensor of cyclic di-GMP. Nature. 478(7370):515-8.


Recent articles using InvivoGen c-di-IMP



Description STING ligand
Cat. Codetlrl-nacdi
Unit Size1 mg
Price For price or distributor address,
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