WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 408089

CAS#: 2095690-70-1

Description: IACS-8803 is a highly potent stimulator of interferon genes (STING) agonist with robust systemic antitumor efficacy. IACS-8803 shows robust activation of the STING pathway in vitro and a superior systemic anti-tumor response in the B16 murine model of melanoma when compared to one of the clinical benchmark compounds.

Price and Availability

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Pricing updated 2021-01-21. Prices are subject to change without notice.

IACS-8803 is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, SDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 408089
Name: IACS-8803
CAS#: 2095690-70-1
Chemical Formula: C20H23FN10O9P2S2
Exact Mass: 692.055
Molecular Weight: 692.5309
Elemental Analysis: C, 34.69; H, 3.35; F, 2.74; N, 20.23; O, 20.79; P, 8.95; S, 9.26

Synonym: IACS-8803; IACS 8803; IACS8803;

IUPAC/Chemical Name: N/A


InChi Code: InChI=1S/C20H23FN10O9P2S2/c21-9-13-8(38-19(9)30-5-28-10-15(22)24-3-26-17(10)30)2-36-42(34,44)40-14-12(32)7(1-35-41(33,43)39-13)37-20(14)31-6-29-11-16(23)25-4-27-18(11)31/h3-9,12-14,19-20,32H,1-2H2,(H,33,43)(H,34,44)(H2,22,24,26)(H2,23,25,27)/t7-,8-,9-,12-,13-,14-,19-,20-,41-,42-/m1/s1

SMILES Code: NC1=C(C2=NC=N1)N=CN2[C@@H]3O[C@H]4[C@H]([C@H]3O[P@](S)(OC[C@@H]5[C@H]([C@H]([C@@H](O5)N6C7=C(N=C6)C(N)=NC=N7)F)O[P@](S)(OC4)=O)=O)O

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>3 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Additional Information

Activation of the stimulator of interferon genes (STING) pathway by both exogenous and endogenous cytosolic DNA results in the production of interferon beta (IFN-β) and is required for the generation of cytotoxic T-cell priming against tumor antigens. In the clinical setting, pharmacological stimulation of the STING pathway has the potential to synergize with immunotherapy antibodies by boosting anti-tumor immune responses.


Ager CR, Zhang H, Wei Z, Jones P, Curran MA, Di Francesco ME. Discovery of IACS-8803 and IACS-8779, potent agonists of stimulator of interferon genes (STING) with robust systemic antitumor efficacy. Bioorg Med Chem Lett. 2019;29(20):126640. doi:10.1016/j.bmcl.2019.126640