Loxoribine Unit size Cat. code Docs Qty Price
Guanosine analog
50 mg

TLR7 Agonist - Guanosine analog

Loxoribine is a guanosine analog derivatized at position N7 and C8. This nucleoside is a very powerful stimulator of the immune system but until recently the mechanism responsible for this immunostimulatory activity was unknown [1].

It appears that similarly to imiquimod, a small synthetic antiviral molecule, loxoribine activates the innate immune system through Toll-like receptor 7 and that this activation requires endosomal maturation [2].

Loxoribine recognition is restricted to TLR7.



1. Gorden KB. et al., 2005. Synthetic TLR agonists reveal functional differences between human TLR7 and TLR8. J Immunol. 174(3):1259-68.
2. Heil F. et al., 2003. The Toll-like receptor 7 (TLR7)-specific stimulus loxoribine uncovers a strong relationship within the TLR7, 8 and 9 subfamily. Eur J Immunol. 33(11):2987-97.

Back to the top


Working concentration: 1 mM (300 µg/ml)

CAS number: 121288-39-9

Specificity: human/mouse TLR7 agonist

Solubility: 100 mM in DMSO

Back to the top


Loxoribine is provided as a white to off-white solid.

  • 50 mg (147 μmol) Loxoribine
  • 25 ml sterile endotoxin-free water

room temperature Loxoribine is shipped at room temperature.

store Store product at 4°C.

Back to the top


Customer Service
& Technical Support
Shopping cart is empty